55215506700 has 108 divisors (see below), whose sum is σ = 182178938760. Its totient is φ = 13949176320.

The previous prime is 55215506683. The next prime is 55215506713. The reversal of 55215506700 is 760551255.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1597389 + ... + 1631588.

Almost surely, 2^55215506700 is an apocalyptic number.

55215506700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55215506700 is an abundant number, since it is smaller than the sum of its proper divisors (126963432060).

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

55215506700 is a wasteful number, since it uses less digits than its factorization.

55215506700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229016 (or 3229006 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The spelling of 55215506700 in words is "fifty-five billion, two hundred fifteen million, five hundred six thousand, seven hundred".