56531942 has 4 divisors (see below), whose sum is σ = 84797916. Its totient is φ = 28265970.

The previous prime is 56531939. The next prime is 56531947. The reversal of 56531942 is 24913565.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56531947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14132984 + ... + 14132987.

It is an arithmetic number, because the mean of its divisors is an integer number (21199479).

Almost surely, 2^56531942 is an apocalyptic number.

56531942 is a deficient number, since it is larger than the sum of its proper divisors (28265974).

56531942 is a wasteful number, since it uses less digits than its factorization.

56531942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28265973.

The product of its digits is 32400, while the sum is 35.

The square root of 56531942 is about 7518.7726392012. The cubic root of 56531942 is about 383.7938120145.

The spelling of 56531942 in words is "fifty-six million, five hundred thirty-one thousand, nine hundred forty-two".