55047818 has 16 divisors (see below), whose sum is σ = 94561344. Its totient is φ = 23543520.

The previous prime is 55047799. The next prime is 55047821. The reversal of 55047818 is 81874055.

It is a super-2 number, since 2×55047818² = 6060524533122248, which contains 22 as substring.

It is a Curzon number.

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, 3521 + ... + 11067.

It is an arithmetic number, because the mean of its divisors is an integer number (5910084).

Almost surely, 2^55047818 is an apocalyptic number.

55047818 is a deficient number, since it is larger than the sum of its proper divisors (39513526).

55047818 is a wasteful number, since it uses less digits than its factorization.

55047818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 55047818 is about 7419.4216755755. The cubic root of 55047818 is about 380.4054260186.

The spelling of 55047818 in words is "fifty-five million, forty-seven thousand, eight hundred eighteen".