55297657950 has 48 divisors (see below), whose sum is σ = 144355998720. Its totient is φ = 13969933920.

The previous prime is 55297657897. The next prime is 55297657951. The reversal of 55297657950 is 5975679255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55297657951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9698494 + ... + 9704193.

It is an arithmetic number, because the mean of its divisors is an integer number (3007416640).

Almost surely, 2^55297657950 is an apocalyptic number.

55297657950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55297657950 is an abundant number, since it is smaller than the sum of its proper divisors (89058340770).

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

55297657950 is a wasteful number, since it uses less digits than its factorization.

55297657950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19402721 (or 19402716 counting only the distinct ones).

The product of its (nonzero) digits is 29767500, while the sum is 60.

The spelling of 55297657950 in words is "fifty-five billion, two hundred ninety-seven million, six hundred fifty-seven thousand, nine hundred fifty".