55666576 has 40 divisors (see below), whose sum is σ = 127245824. Its totient is φ = 23086080.

The previous prime is 55666543. The next prime is 55666577. The reversal of 55666576 is 67566655.

It is not an unprimeable number, because it can be changed into a prime (55666577) 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, 4545 + ... + 11488.

Almost surely, 2^55666576 is an apocalyptic number.

55666576 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55666576 is an abundant number, since it is smaller than the sum of its proper divisors (71579248).

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

55666576 is a wasteful number, since it uses less digits than its factorization.

55666576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16079 (or 16073 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 46.

The square root of 55666576 is about 7461.0036858321. The cubic root of 55666576 is about 381.8254184295.

The spelling of 55666576 in words is "fifty-five million, six hundred sixty-six thousand, five hundred seventy-six".