55965818 has 4 divisors (see below), whose sum is σ = 83948730. Its totient is φ = 27982908.

The previous prime is 55965809. The next prime is 55965829. The reversal of 55965818 is 81856955.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 55547209 + 418609 = 7453^2 + 647^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13991453 + ... + 13991456.

Almost surely, 2^55965818 is an apocalyptic number.

55965818 is a deficient number, since it is larger than the sum of its proper divisors (27982912).

55965818 is a wasteful number, since it uses less digits than its factorization.

55965818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27982911.

The product of its digits is 432000, while the sum is 47.

The square root of 55965818 is about 7481.0305439826. The cubic root of 55965818 is about 382.5083780756.

The spelling of 55965818 in words is "fifty-five million, nine hundred sixty-five thousand, eight hundred eighteen".