55204660 has 24 divisors (see below), whose sum is σ = 132491520. Its totient is φ = 18927264.

The previous prime is 55204657. The next prime is 55204673. The reversal of 55204660 is 6640255.

55204660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197020 + ... + 197299.

It is an arithmetic number, because the mean of its divisors is an integer number (5520480).

Almost surely, 2^55204660 is an apocalyptic number.

It is an amenable number.

55204660 is an abundant number, since it is smaller than the sum of its proper divisors (77286860).

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

55204660 is a wasteful number, since it uses less digits than its factorization.

55204660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394335 (or 394333 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 55204660 is about 7429.9838492422. The cubic root of 55204660 is about 380.7663665920.

The spelling of 55204660 in words is "fifty-five million, two hundred four thousand, six hundred sixty".