56402837 has 4 divisors (see below), whose sum is σ = 57927276. Its totient is φ = 54878400.

The previous prime is 56402807. The next prime is 56402851. The reversal of 56402837 is 73820465.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26306641 + 30096196 = 5129^2 + 5486^2 .

It is not a de Polignac number, because 56402837 - 2⁸ = 56402581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56402797 and 56402806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56402807) 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, 762164 + ... + 762237.

It is an arithmetic number, because the mean of its divisors is an integer number (14481819).

Almost surely, 2^56402837 is an apocalyptic number.

It is an amenable number.

56402837 is a deficient number, since it is larger than the sum of its proper divisors (1524439).

56402837 is a wasteful number, since it uses less digits than its factorization.

56402837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524438.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 56402837 is about 7510.1822214910. The cubic root of 56402837 is about 383.5014258812.

The spelling of 56402837 in words is "fifty-six million, four hundred two thousand, eight hundred thirty-seven".