56426057 has 2 divisors, whose sum is σ = 56426058. Its totient is φ = 56426056.

The previous prime is 56426047. The next prime is 56426063. The reversal of 56426057 is 75062465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30426256 + 25999801 = 5516^2 + 5099^2 .

It is a cyclic number.

It is not a de Polignac number, because 56426057 - 2²⁰ = 55377481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56426047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28213028 + 28213029.

It is an arithmetic number, because the mean of its divisors is an integer number (28213029).

Almost surely, 2^56426057 is an apocalyptic number.

It is an amenable number.

56426057 is a deficient number, since it is larger than the sum of its proper divisors (1).

56426057 is an equidigital number, since it uses as much as digits as its factorization.

56426057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 56426057 is about 7511.7279636579. The cubic root of 56426057 is about 383.5540454648.

The spelling of 56426057 in words is "fifty-six million, four hundred twenty-six thousand, fifty-seven".