55631066 has 16 divisors (see below), whose sum is σ = 87640704. Its totient is φ = 26433264.

The previous prime is 55631057. The next prime is 55631071. The reversal of 55631066 is 66013655.

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, 3371 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (5477544).

Almost surely, 2^55631066 is an apocalyptic number.

55631066 is a deficient number, since it is larger than the sum of its proper divisors (32009638).

55631066 is a wasteful number, since it uses less digits than its factorization.

55631066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7885.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 55631066 is about 7458.6235995658. The cubic root of 55631066 is about 381.7442116824.

The spelling of 55631066 in words is "fifty-five million, six hundred thirty-one thousand, sixty-six".