55305507 has 8 divisors (see below), whose sum is σ = 73917520. Its totient is φ = 36781920.

The previous prime is 55305493. The next prime is 55305517. The reversal of 55305507 is 70550355.

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

It is not a de Polignac number, because 55305507 - 2⁶ = 55305443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55305517) 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, 20632 + ... + 23157.

It is an arithmetic number, because the mean of its divisors is an integer number (9239690).

Almost surely, 2^55305507 is an apocalyptic number.

55305507 is a deficient number, since it is larger than the sum of its proper divisors (18612013).

55305507 is a wasteful number, since it uses less digits than its factorization.

55305507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44213.

The product of its (nonzero) digits is 13125, while the sum is 30.

The square root of 55305507 is about 7436.7672412144. The cubic root of 55305507 is about 380.9980848754.

The spelling of 55305507 in words is "fifty-five million, three hundred five thousand, five hundred seven".