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52151125231 = 225123167981
BaseRepresentation
bin110000100100011100…
…110000010011101111
311222121111112122200201
4300210130300103233
51323301142001411
635542523334331
73524232151612
oct604434602357
9158544478621
1052151125231
1120131a502a7
12a1353813a7
134bc161b1aa
14274a2c8179
15155365a3c1
hexc247304ef

52151125231 has 4 divisors (see below), whose sum is σ = 52174295464. Its totient is φ = 52127955000.

The previous prime is 52151125133. The next prime is 52151125237. The reversal of 52151125231 is 13252115125.

It is a happy number.

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 52151125231 - 215 = 52151092463 is a prime.

It is a super-2 number, since 2×521511252312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52151125231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52151125237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11581740 + ... + 11586241.

It is an arithmetic number, because the mean of its divisors is an integer number (13043573866).

Almost surely, 252151125231 is an apocalyptic number.

52151125231 is a deficient number, since it is larger than the sum of its proper divisors (23170233).

52151125231 is a wasteful number, since it uses less digits than its factorization.

52151125231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23170232.

The product of its digits is 3000, while the sum is 28.

The spelling of 52151125231 in words is "fifty-two billion, one hundred fifty-one million, one hundred twenty-five thousand, two hundred thirty-one".

Divisors: 1 2251 23167981 52151125231