56491239 has 8 divisors (see below), whose sum is σ = 86081920. Its totient is φ = 32280696.

The previous prime is 56491231. The next prime is 56491249. The reversal of 56491239 is 93219465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56491239 - 2³ = 56491231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56491197 and 56491206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56491231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1345009 + ... + 1345050.

It is an arithmetic number, because the mean of its divisors is an integer number (10760240).

Almost surely, 2^56491239 is an apocalyptic number.

56491239 is a deficient number, since it is larger than the sum of its proper divisors (29590681).

56491239 is a wasteful number, since it uses less digits than its factorization.

56491239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690069.

The product of its digits is 58320, while the sum is 39.

The square root of 56491239 is about 7516.0653935420. The cubic root of 56491239 is about 383.7016793803.

The spelling of 56491239 in words is "fifty-six million, four hundred ninety-one thousand, two hundred thirty-nine".