55380507 has 16 divisors (see below), whose sum is σ = 90881280. Its totient is φ = 29211552.

The previous prime is 55380491. The next prime is 55380511. The reversal of 55380507 is 70508355.

It is not a de Polignac number, because 55380507 - 2⁴ = 55380491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55380557) 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, 101157 + ... + 101702.

It is an arithmetic number, because the mean of its divisors is an integer number (5680080).

Almost surely, 2^55380507 is an apocalyptic number.

55380507 is a deficient number, since it is larger than the sum of its proper divisors (35500773).

55380507 is a wasteful number, since it uses less digits than its factorization.

55380507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202882.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 55380507 is about 7441.8080464360. The cubic root of 55380507 is about 381.1702313808.

The spelling of 55380507 in words is "fifty-five million, three hundred eighty thousand, five hundred seven".