55215161050 has 96 divisors (see below), whose sum is σ = 127635187968. Its totient is φ = 17335710720.

The previous prime is 55215161047. The next prime is 55215161051. The reversal of 55215161050 is 5016151255.

It is not an unprimeable number, because it can be changed into a prime (55215161051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94747 + ... + 345553.

It is an arithmetic number, because the mean of its divisors is an integer number (1329533208).

Almost surely, 2^55215161050 is an apocalyptic number.

55215161050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55215161050 is an abundant number, since it is smaller than the sum of its proper divisors (72420026918).

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

55215161050 is a wasteful number, since it uses less digits than its factorization.

55215161050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250880 (or 250875 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 55215161050 in words is "fifty-five billion, two hundred fifteen million, one hundred sixty-one thousand, fifty".