55621182164 has 12 divisors (see below), whose sum is σ = 101569115424. Its totient is φ = 26601434904.

The previous prime is 55621182137. The next prime is 55621182191. The reversal of 55621182164 is 46128112655.

It is an interprime number because it is at equal distance from previous prime (55621182137) and next prime (55621182191).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302288942 + ... + 302289125.

It is an arithmetic number, because the mean of its divisors is an integer number (8464092952).

Almost surely, 2^55621182164 is an apocalyptic number.

It is an amenable number.

55621182164 is a deficient number, since it is larger than the sum of its proper divisors (45947933260).

55621182164 is a wasteful number, since it uses less digits than its factorization.

55621182164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604578094 (or 604578092 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The spelling of 55621182164 in words is "fifty-five billion, six hundred twenty-one million, one hundred eighty-two thousand, one hundred sixty-four".