55604631 has 8 divisors (see below), whose sum is σ = 74222064. Its totient is φ = 37028480.

The previous prime is 55604597. The next prime is 55604683. The reversal of 55604631 is 13640655.

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

It is a cyclic number.

It is not a de Polignac number, because 55604631 - 2⁷ = 55604503 is a prime.

It is a super-2 number, since 2×55604631² = 6183749977292322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55604531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7026 + ... + 12671.

It is an arithmetic number, because the mean of its divisors is an integer number (9277758).

Almost surely, 2^55604631 is an apocalyptic number.

55604631 is a deficient number, since it is larger than the sum of its proper divisors (18617433).

55604631 is a wasteful number, since it uses less digits than its factorization.

55604631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20641.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55604631 is about 7456.8512791928. The cubic root of 55604631 is about 381.6837358380.

The spelling of 55604631 in words is "fifty-five million, six hundred four thousand, six hundred thirty-one".