57089978531 has 2 divisors, whose sum is σ = 57089978532. Its totient is φ = 57089978530.

The previous prime is 57089978503. The next prime is 57089978591. The reversal of 57089978531 is 13587998075.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57089978531 is a prime.

It is a super-2 number, since 2×57089978531² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57089978591) 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 as a sum of consecutive naturals, namely, 28544989265 + 28544989266.

It is an arithmetic number, because the mean of its divisors is an integer number (28544989266).

Almost surely, 2^57089978531 is an apocalyptic number.

57089978531 is a deficient number, since it is larger than the sum of its proper divisors (1).

57089978531 is an equidigital number, since it uses as much as digits as its factorization.

57089978531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 62.

The spelling of 57089978531 in words is "fifty-seven billion, eighty-nine million, nine hundred seventy-eight thousand, five hundred thirty-one".