56239239 has 16 divisors (see below), whose sum is σ = 88463360. Its totient is φ = 31099680.

The previous prime is 56239237. The next prime is 56239291. The reversal of 56239239 is 93293265.

It is not a de Polignac number, because 56239239 - 2¹ = 56239237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56239197 and 56239206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56239237) 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, 42544 + ... + 43845.

It is an arithmetic number, because the mean of its divisors is an integer number (5528960).

Almost surely, 2^56239239 is an apocalyptic number.

56239239 is a deficient number, since it is larger than the sum of its proper divisors (32224121).

56239239 is a wasteful number, since it uses less digits than its factorization.

56239239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86430.

The product of its digits is 87480, while the sum is 39.

The square root of 56239239 is about 7499.2825656859. The cubic root of 56239239 is about 383.1302812880.

The spelling of 56239239 in words is "fifty-six million, two hundred thirty-nine thousand, two hundred thirty-nine".