55329590 has 16 divisors (see below), whose sum is σ = 100997280. Its totient is φ = 21819840.

The previous prime is 55329587. The next prime is 55329601. The reversal of 55329590 is 9592355.

It is a super-2 number, since 2×55329590² = 6122727059136200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38255 + ... + 39674.

It is an arithmetic number, because the mean of its divisors is an integer number (6312330).

Almost surely, 2^55329590 is an apocalyptic number.

55329590 is a deficient number, since it is larger than the sum of its proper divisors (45667690).

55329590 is a wasteful number, since it uses less digits than its factorization.

55329590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78007.

The product of its (nonzero) digits is 60750, while the sum is 38.

The square root of 55329590 is about 7438.3862497184. The cubic root of 55329590 is about 381.0533792204.

The spelling of 55329590 in words is "fifty-five million, three hundred twenty-nine thousand, five hundred ninety".