56642232 has 32 divisors (see below), whose sum is σ = 149936400. Its totient is φ = 17769984.

The previous prime is 56642231. The next prime is 56642237. The reversal of 56642232 is 23224665.

It is a self number, because there is not a number n which added to its sum of digits gives 56642232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56642231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69007 + ... + 69822.

Almost surely, 2^56642232 is an apocalyptic number.

It is an amenable number.

56642232 is an abundant number, since it is smaller than the sum of its proper divisors (93294168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56642232 is a wasteful number, since it uses less digits than its factorization.

56642232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138855 (or 138851 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 56642232 is about 7526.1033742568. The cubic root of 56642232 is about 384.0432351493.

Adding to 56642232 its reverse (23224665), we get a palindrome (79866897).

The spelling of 56642232 in words is "fifty-six million, six hundred forty-two thousand, two hundred thirty-two".