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5055031021 = 611912711601
BaseRepresentation
bin1001011010100110…
…11010011011101101
3111001021221011221011
410231103122123231
540323041443041
62153334505221
7236161024525
oct45523323355
914037834834
105055031021
112164484697
12b90b05211
13627388c21
1435d508685
151e8bc6e81
hex12d4da6ed

5055031021 has 16 divisors (see below), whose sum is σ = 5187096576. Its totient is φ = 4924800000.

The previous prime is 5055031019. The next prime is 5055031099. The reversal of 5055031021 is 1201305505.

It is a cyclic number.

It is not a de Polignac number, because 5055031021 - 21 = 5055031019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5055030983 and 5055031001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5055031321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3156621 + ... + 3158221.

It is an arithmetic number, because the mean of its divisors is an integer number (324193536).

Almost surely, 25055031021 is an apocalyptic number.

It is an amenable number.

5055031021 is a deficient number, since it is larger than the sum of its proper divisors (132065555).

5055031021 is a wasteful number, since it uses less digits than its factorization.

5055031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 5055031021 is about 71098.7413461026. The cubic root of 5055031021 is about 1716.2265189143.

Adding to 5055031021 its reverse (1201305505), we get a palindrome (6256336526).

The spelling of 5055031021 in words is "five billion, fifty-five million, thirty-one thousand, twenty-one".

Divisors: 1 61 191 271 1601 11651 16531 51761 97661 305791 433871 3157421 18653251 26466131 82869361 5055031021