55499997150 has 432 divisors, whose sum is σ = 169492901760. Its totient is φ = 13495248000.

The previous prime is 55499997149. The next prime is 55499997169. The reversal of 55499997150 is 5179999455.

55499997150 is a `hidden beast` number, since 5 + 5 + 499 + 9 + 97 + 1 + 50 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 310055761 + ... + 310055939.

It is an arithmetic number, because the mean of its divisors is an integer number (392344680).

Almost surely, 2^55499997150 is an apocalyptic number.

55499997150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55499997150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84746450880).

55499997150 is an abundant number, since it is smaller than the sum of its proper divisors (113992904610).

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

55499997150 is a wasteful number, since it uses less digits than its factorization.

55499997150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 22963500, while the sum is 63.

The spelling of 55499997150 in words is "fifty-five billion, four hundred ninety-nine million, nine hundred ninety-seven thousand, one hundred fifty".