55638364 has 12 divisors (see below), whose sum is σ = 98068600. Its totient is φ = 27618768.

The previous prime is 55638347. The next prime is 55638367. The reversal of 55638364 is 46383655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55638367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49479 + ... + 50590.

Almost surely, 2^55638364 is an apocalyptic number.

It is an amenable number.

55638364 is a deficient number, since it is larger than the sum of its proper divisors (42430236).

55638364 is a wasteful number, since it uses less digits than its factorization.

55638364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100212 (or 100210 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 55638364 is about 7459.1128158783. The cubic root of 55638364 is about 381.7609040789.

The spelling of 55638364 in words is "fifty-five million, six hundred thirty-eight thousand, three hundred sixty-four".