56123501251 has 2 divisors, whose sum is σ = 56123501252. Its totient is φ = 56123501250.

The previous prime is 56123501233. The next prime is 56123501261. The reversal of 56123501251 is 15210532165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56123501251 - 2²⁹ = 55586630339 is a prime.

It is not a weakly prime, because it can be changed into another prime (56123501261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28061750625 + 28061750626.

It is an arithmetic number, because the mean of its divisors is an integer number (28061750626).

Almost surely, 2^56123501251 is an apocalyptic number.

56123501251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56123501251 is an equidigital number, since it uses as much as digits as its factorization.

56123501251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 56123501251 in words is "fifty-six billion, one hundred twenty-three million, five hundred one thousand, two hundred fifty-one".