55720517200 has 60 divisors (see below), whose sum is σ = 140914274560. Its totient is φ = 21115140480.

The previous prime is 55720517191. The next prime is 55720517213. The reversal of 55720517200 is 271502755.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3658224 + ... + 3673423.

Almost surely, 2^55720517200 is an apocalyptic number.

55720517200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55720517200 is an abundant number, since it is smaller than the sum of its proper divisors (85193757360).

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

55720517200 is a wasteful number, since it uses less digits than its factorization.

55720517200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7331684 (or 7331673 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 34.

The spelling of 55720517200 in words is "fifty-five billion, seven hundred twenty million, five hundred seventeen thousand, two hundred".