57056236291 has 2 divisors, whose sum is σ = 57056236292. Its totient is φ = 57056236290.

The previous prime is 57056236241. The next prime is 57056236297. The reversal of 57056236291 is 19263265075.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57056236291 - 2²¹ = 57054139139 is a prime.

It is not a weakly prime, because it can be changed into another prime (57056236297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28528118145 + 28528118146.

It is an arithmetic number, because the mean of its divisors is an integer number (28528118146).

Almost surely, 2^57056236291 is an apocalyptic number.

57056236291 is a deficient number, since it is larger than the sum of its proper divisors (1).

57056236291 is an equidigital number, since it uses as much as digits as its factorization.

57056236291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 57056236291 in words is "fifty-seven billion, fifty-six million, two hundred thirty-six thousand, two hundred ninety-one".