56725772291 has 2 divisors, whose sum is σ = 56725772292. Its totient is φ = 56725772290.

The previous prime is 56725772249. The next prime is 56725772309. The reversal of 56725772291 is 19227752765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56725772291 - 2¹⁸ = 56725510147 is a prime.

It is not a weakly prime, because it can be changed into another prime (56725672291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28362886145 + 28362886146.

It is an arithmetic number, because the mean of its divisors is an integer number (28362886146).

Almost surely, 2^56725772291 is an apocalyptic number.

56725772291 is a deficient number, since it is larger than the sum of its proper divisors (1).

56725772291 is an equidigital number, since it uses as much as digits as its factorization.

56725772291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3704400, while the sum is 53.

The spelling of 56725772291 in words is "fifty-six billion, seven hundred twenty-five million, seven hundred seventy-two thousand, two hundred ninety-one".