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2520345127 = 21503117209
BaseRepresentation
bin1001011000111001…
…0110101000100111
320111122110210112211
42112032112220213
520130202021002
61054031424251
7116312402656
oct22616265047
96448423484
102520345127
11108373a663
125a4085087
133122039a1
1419ca2919d
15eb3e8dd7
hex96396a27

2520345127 has 4 divisors (see below), whose sum is σ = 2520483840. Its totient is φ = 2520206416.

The previous prime is 2520345109. The next prime is 2520345133. The reversal of 2520345127 is 7215430252.

2520345127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2520345127 - 219 = 2519820839 is a prime.

It is a super-2 number, since 2×25203451272 = 12704279118385292258, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520345187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37102 + ... + 80107.

It is an arithmetic number, because the mean of its divisors is an integer number (630120960).

Almost surely, 22520345127 is an apocalyptic number.

2520345127 is a deficient number, since it is larger than the sum of its proper divisors (138713).

2520345127 is a wasteful number, since it uses less digits than its factorization.

2520345127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138712.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 2520345127 is about 50203.0390215573. The cubic root of 2520345127 is about 1360.8805440559.

Adding to 2520345127 its reverse (7215430252), we get a palindrome (9735775379).

The spelling of 2520345127 in words is "two billion, five hundred twenty million, three hundred forty-five thousand, one hundred twenty-seven".

Divisors: 1 21503 117209 2520345127