55637966 has 16 divisors (see below), whose sum is σ = 91670400. Its totient is φ = 25208568.

The previous prime is 55637951. The next prime is 55637977. The reversal of 55637966 is 66973655.

It is a self number, because there is not a number n which added to its sum of digits gives 55637966.

It is a congruent number.

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, 30956 + ... + 32703.

It is an arithmetic number, because the mean of its divisors is an integer number (5729400).

Almost surely, 2^55637966 is an apocalyptic number.

55637966 is a deficient number, since it is larger than the sum of its proper divisors (36032434).

55637966 is a wasteful number, since it uses less digits than its factorization.

55637966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63703.

The product of its digits is 1020600, while the sum is 47.

The square root of 55637966 is about 7459.0861370546. The cubic root of 55637966 is about 381.7599937886.

The spelling of 55637966 in words is "fifty-five million, six hundred thirty-seven thousand, nine hundred sixty-six".