56402171 has 16 divisors (see below), whose sum is σ = 67342080. Its totient is φ = 46228320.

The previous prime is 56402149. The next prime is 56402179. The reversal of 56402171 is 17120465.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56402171 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 56402171.

It is not an unprimeable number, because it can be changed into a prime (56402179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13436 + ... + 17126.

It is an arithmetic number, because the mean of its divisors is an integer number (4208880).

Almost surely, 2^56402171 is an apocalyptic number.

56402171 is a deficient number, since it is larger than the sum of its proper divisors (10939909).

56402171 is a wasteful number, since it uses less digits than its factorization.

56402171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3794.

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

The square root of 56402171 is about 7510.1378815572. The cubic root of 56402171 is about 383.4999164243.

The spelling of 56402171 in words is "fifty-six million, four hundred two thousand, one hundred seventy-one".