55805330 has 32 divisors (see below), whose sum is σ = 115105536. Its totient is φ = 19082304.

The previous prime is 55805329. The next prime is 55805333. The reversal of 55805330 is 3350855.

It is a super-2 number, since 2×55805330² = 6228469712817800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55805293 and 55805302.

It is not an unprimeable number, because it can be changed into a prime (55805333) 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, 33272 + ... + 34908.

It is an arithmetic number, because the mean of its divisors is an integer number (3597048).

Almost surely, 2^55805330 is an apocalyptic number.

55805330 is an abundant number, since it is smaller than the sum of its proper divisors (59300206).

55805330 is a wasteful number, since it uses less digits than its factorization.

55805330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 55805330 is about 7470.2965135261. The cubic root of 55805330 is about 382.1424000593.

The spelling of 55805330 in words is "fifty-five million, eight hundred five thousand, three hundred thirty".