56402251 has 2 divisors, whose sum is σ = 56402252. Its totient is φ = 56402250.

The previous prime is 56402249. The next prime is 56402257. The reversal of 56402251 is 15220465.

56402251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56402251 - 2¹ = 56402249 is a prime.

Together with 56402249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56402257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28201125 + 28201126.

It is an arithmetic number, because the mean of its divisors is an integer number (28201126).

Almost surely, 2^56402251 is an apocalyptic number.

56402251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56402251 is an equidigital number, since it uses as much as digits as its factorization.

56402251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 56402251 is about 7510.1432076892. The cubic root of 56402251 is about 383.5000977411.

The spelling of 56402251 in words is "fifty-six million, four hundred two thousand, two hundred fifty-one".