55291318 has 8 divisors (see below), whose sum is σ = 83465712. Its totient is φ = 27469416.

The previous prime is 55291309. The next prime is 55291331. The reversal of 55291318 is 81319255.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87730 + ... + 88357.

It is an arithmetic number, because the mean of its divisors is an integer number (10433214).

Almost surely, 2^55291318 is an apocalyptic number.

55291318 is a deficient number, since it is larger than the sum of its proper divisors (28174394).

55291318 is a wasteful number, since it uses less digits than its factorization.

55291318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176246.

The product of its digits is 10800, while the sum is 34.

The square root of 55291318 is about 7435.8132036785. The cubic root of 55291318 is about 380.9654995477.

The spelling of 55291318 in words is "fifty-five million, two hundred ninety-one thousand, three hundred eighteen".