55328508 has 30 divisors (see below), whose sum is σ = 144640496. Its totient is φ = 18442728.

The previous prime is 55328479. The next prime is 55328543. The reversal of 55328508 is 80582355.

It is a super-2 number, since 2×55328508² = 6122487595012128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 85060 + ... + 85707.

Almost surely, 2^55328508 is an apocalyptic number.

It is an amenable number.

55328508 is an abundant number, since it is smaller than the sum of its proper divisors (89311988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55328508 is a wasteful number, since it uses less digits than its factorization.

55328508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170783 (or 170772 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 55328508 is about 7438.3135185336. The cubic root of 55328508 is about 381.0508953027.

The spelling of 55328508 in words is "fifty-five million, three hundred twenty-eight thousand, five hundred eight".