55315632 has 40 divisors (see below), whose sum is σ = 143641600. Its totient is φ = 18342720.

The previous prime is 55315619. The next prime is 55315643. The reversal of 55315632 is 23651355.

It is a self number, because there is not a number n which added to its sum of digits gives 55315632.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6657 + ... + 12447.

It is an arithmetic number, because the mean of its divisors is an integer number (3591040).

Almost surely, 2^55315632 is an apocalyptic number.

It is an amenable number.

55315632 is an abundant number, since it is smaller than the sum of its proper divisors (88325968).

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

55315632 is a wasteful number, since it uses less digits than its factorization.

55315632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001 (or 5995 counting only the distinct ones).

The product of its digits is 13500, while the sum is 30.

The square root of 55315632 is about 7437.4479493977. The cubic root of 55315632 is about 381.0213337370.

Adding to 55315632 its reverse (23651355), we get a palindrome (78966987).

The spelling of 55315632 in words is "fifty-five million, three hundred fifteen thousand, six hundred thirty-two".