56402117 has 2 divisors, whose sum is σ = 56402118. Its totient is φ = 56402116.

The previous prime is 56402081. The next prime is 56402119. The reversal of 56402117 is 71120465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55145476 + 1256641 = 7426^2 + 1121^2 .

It is a cyclic number.

It is not a de Polignac number, because 56402117 - 2¹⁴ = 56385733 is a prime.

Together with 56402119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56402119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28201058 + 28201059.

It is an arithmetic number, because the mean of its divisors is an integer number (28201059).

Almost surely, 2^56402117 is an apocalyptic number.

It is an amenable number.

56402117 is a deficient number, since it is larger than the sum of its proper divisors (1).

56402117 is an equidigital number, since it uses as much as digits as its factorization.

56402117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 56402117 is about 7510.1342864159. The cubic root of 56402117 is about 383.4997940354.

The spelling of 56402117 in words is "fifty-six million, four hundred two thousand, one hundred seventeen".