56152531 has 2 divisors, whose sum is σ = 56152532. Its totient is φ = 56152530.

The previous prime is 56152529. The next prime is 56152541. The reversal of 56152531 is 13525165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56152531 - 2¹ = 56152529 is a prime.

It is a super-2 number, since 2×56152531² = 6306213475411922, which contains 22 as substring.

Together with 56152529, it forms a pair of twin primes.

It is equal to p_3346930 and since 56152531 and 3346930 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56152531.

It is not a weakly prime, because it can be changed into another prime (56152541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28076265 + 28076266.

It is an arithmetic number, because the mean of its divisors is an integer number (28076266).

Almost surely, 2^56152531 is an apocalyptic number.

56152531 is a deficient number, since it is larger than the sum of its proper divisors (1).

56152531 is an equidigital number, since it uses as much as digits as its factorization.

56152531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 28.

The square root of 56152531 is about 7493.4992493494. The cubic root of 56152531 is about 382.9332803539.

Adding to 56152531 its reverse (13525165), we get a palindrome (69677696).

The spelling of 56152531 in words is "fifty-six million, one hundred fifty-two thousand, five hundred thirty-one".