55506507 has 16 divisors (see below), whose sum is σ = 86549760. Its totient is φ = 30979872.

The previous prime is 55506487. The next prime is 55506569. The reversal of 55506507 is 70560555.

It is not a de Polignac number, because 55506507 - 2⁶ = 55506443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55506307) 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, 29832 + ... + 31637.

It is an arithmetic number, because the mean of its divisors is an integer number (5409360).

Almost surely, 2^55506507 is an apocalyptic number.

55506507 is a deficient number, since it is larger than the sum of its proper divisors (31043253).

55506507 is a wasteful number, since it uses less digits than its factorization.

55506507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61522.

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 55506507 is about 7450.2689213209. The cubic root of 55506507 is about 381.4590879611.

The spelling of 55506507 in words is "fifty-five million, five hundred six thousand, five hundred seven".