56213057 has 2 divisors, whose sum is σ = 56213058. Its totient is φ = 56213056.

The previous prime is 56213051. The next prime is 56213089. The reversal of 56213057 is 75031265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53129521 + 3083536 = 7289^2 + 1756^2 .

It is a cyclic number.

It is not a de Polignac number, because 56213057 - 2¹² = 56208961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56213051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28106528 + 28106529.

It is an arithmetic number, because the mean of its divisors is an integer number (28106529).

Almost surely, 2^56213057 is an apocalyptic number.

It is an amenable number.

56213057 is a deficient number, since it is larger than the sum of its proper divisors (1).

56213057 is an equidigital number, since it uses as much as digits as its factorization.

56213057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 56213057 is about 7497.5367288197. The cubic root of 56213057 is about 383.0708170287.

The spelling of 56213057 in words is "fifty-six million, two hundred thirteen thousand, fifty-seven".