55406616 has 16 divisors (see below), whose sum is σ = 138516600. Its totient is φ = 18468864.

The previous prime is 55406599. The next prime is 55406639. The reversal of 55406616 is 61660455.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154281 + ... + 1154328.

Almost surely, 2^55406616 is an apocalyptic number.

It is an amenable number.

55406616 is an abundant number, since it is smaller than the sum of its proper divisors (83109984).

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

55406616 is a wasteful number, since it uses less digits than its factorization.

55406616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308618 (or 2308614 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 55406616 is about 7443.5620505239. The cubic root of 55406616 is about 381.2301225505.

The spelling of 55406616 in words is "fifty-five million, four hundred six thousand, six hundred sixteen".