56002157 has 2 divisors, whose sum is σ = 56002158. Its totient is φ = 56002156.

The previous prime is 56002153. The next prime is 56002181. The reversal of 56002157 is 75120065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54449641 + 1552516 = 7379^2 + 1246^2 .

It is a cyclic number.

It is not a de Polignac number, because 56002157 - 2² = 56002153 is a prime.

It is a Chen prime.

It is equal to p_3338450 and since 56002157 and 3338450 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56002153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28001078 + 28001079.

It is an arithmetic number, because the mean of its divisors is an integer number (28001079).

Almost surely, 2^56002157 is an apocalyptic number.

It is an amenable number.

56002157 is a deficient number, since it is larger than the sum of its proper divisors (1).

56002157 is an equidigital number, since it uses as much as digits as its factorization.

56002157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 56002157 is about 7483.4588927848. The cubic root of 56002157 is about 382.5911486254.

The spelling of 56002157 in words is "fifty-six million, two thousand, one hundred fifty-seven".