56402351 has 4 divisors (see below), whose sum is σ = 56846592. Its totient is φ = 55958112.

The previous prime is 56402323. The next prime is 56402383. The reversal of 56402351 is 15320465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56402351 - 2¹⁸ = 56140207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56402351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56402321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221930 + ... + 222183.

It is an arithmetic number, because the mean of its divisors is an integer number (14211648).

Almost surely, 2^56402351 is an apocalyptic number.

56402351 is a deficient number, since it is larger than the sum of its proper divisors (444241).

56402351 is a wasteful number, since it uses less digits than its factorization.

56402351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444240.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 56402351 is about 7510.1498653489. The cubic root of 56402351 is about 383.5003243868.

The spelling of 56402351 in words is "fifty-six million, four hundred two thousand, three hundred fifty-one".