55053865 has 16 divisors (see below), whose sum is σ = 67092480. Its totient is φ = 43364160.

The previous prime is 55053863. The next prime is 55053893. The reversal of 55053865 is 56835055.

It is not a de Polignac number, because 55053865 - 2¹ = 55053863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55053863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114696 + ... + 115174.

It is an arithmetic number, because the mean of its divisors is an integer number (4193280).

Almost surely, 2^55053865 is an apocalyptic number.

It is an amenable number.

55053865 is a deficient number, since it is larger than the sum of its proper divisors (12038615).

55053865 is a wasteful number, since it uses less digits than its factorization.

55053865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 55053865 is about 7419.8291759312. The cubic root of 55053865 is about 380.4193546808.

The spelling of 55053865 in words is "fifty-five million, fifty-three thousand, eight hundred sixty-five".