56751251 has 2 divisors, whose sum is σ = 56751252. Its totient is φ = 56751250.

The previous prime is 56751217. The next prime is 56751259. The reversal of 56751251 is 15215765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56751251 - 2⁶ = 56751187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56751259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28375625 + 28375626.

It is an arithmetic number, because the mean of its divisors is an integer number (28375626).

Almost surely, 2^56751251 is an apocalyptic number.

56751251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56751251 is an equidigital number, since it uses as much as digits as its factorization.

56751251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10500, while the sum is 32.

The square root of 56751251 is about 7533.3426179884. The cubic root of 56751251 is about 384.2894658951.

The spelling of 56751251 in words is "fifty-six million, seven hundred fifty-one thousand, two hundred fifty-one".