55915018 has 8 divisors (see below), whose sum is σ = 83907648. Its totient is φ = 27945804.

The previous prime is 55914983. The next prime is 55915033. The reversal of 55915018 is 81051955.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505 + ... + 10867.

It is an arithmetic number, because the mean of its divisors is an integer number (10488456).

Almost surely, 2^55915018 is an apocalyptic number.

55915018 is a deficient number, since it is larger than the sum of its proper divisors (27992630).

55915018 is a wasteful number, since it uses less digits than its factorization.

55915018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11708.

The product of its (nonzero) digits is 9000, while the sum is 34.

The square root of 55915018 is about 7477.6345190174. The cubic root of 55915018 is about 382.3926091500.

It can be divided in two parts, 5591 and 5018, that added together give a square (10609 = 103²).

The spelling of 55915018 in words is "fifty-five million, nine hundred fifteen thousand, eighteen".