55012865 has 8 divisors (see below), whose sum is σ = 66232320. Its totient is φ = 43865712.

The previous prime is 55012861. The next prime is 55012883. The reversal of 55012865 is 56821055.

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

It is a cyclic number.

It is not a de Polignac number, because 55012865 - 2² = 55012861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55012861) 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, 16385 + ... + 19454.

It is an arithmetic number, because the mean of its divisors is an integer number (8279040).

Almost surely, 2^55012865 is an apocalyptic number.

It is an amenable number.

55012865 is a deficient number, since it is larger than the sum of its proper divisors (11219455).

55012865 is a wasteful number, since it uses less digits than its factorization.

55012865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36151.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 55012865 is about 7417.0657945039. The cubic root of 55012865 is about 380.3248952696.

The spelling of 55012865 in words is "fifty-five million, twelve thousand, eight hundred sixty-five".