55045539 has 12 divisors (see below), whose sum is σ = 79951872. Its totient is φ = 36493200.

The previous prime is 55045531. The next prime is 55045583. The reversal of 55045539 is 93554055.

It is not a de Polignac number, because 55045539 - 2³ = 55045531 is a prime.

It is a super-2 number, since 2×55045539² = 6060022727601042, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55045531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15267 + ... + 18524.

It is an arithmetic number, because the mean of its divisors is an integer number (6662656).

Almost surely, 2^55045539 is an apocalyptic number.

55045539 is a deficient number, since it is larger than the sum of its proper divisors (24906333).

55045539 is a wasteful number, since it uses less digits than its factorization.

55045539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33978 (or 33975 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 55045539 is about 7419.2680905868. The cubic root of 55045539 is about 380.4001763045.

The spelling of 55045539 in words is "fifty-five million, forty-five thousand, five hundred thirty-nine".