55506616 has 32 divisors (see below), whose sum is σ = 117204480. Its totient is φ = 24415200.

The previous prime is 55506599. The next prime is 55506637. The reversal of 55506616 is 61660555.

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, 7446 + ... + 12901.

It is an arithmetic number, because the mean of its divisors is an integer number (3662640).

Almost surely, 2^55506616 is an apocalyptic number.

It is an amenable number.

55506616 is an abundant number, since it is smaller than the sum of its proper divisors (61697864).

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

55506616 is a wasteful number, since it uses less digits than its factorization.

55506616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20395 (or 20391 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 55506616 is about 7450.2762364895. The cubic root of 55506616 is about 381.4593376556.

The spelling of 55506616 in words is "fifty-five million, five hundred six thousand, six hundred sixteen".