51520554300 has 72 divisors (see below), whose sum is σ = 155547294336. Its totient is φ = 13141472960.

The previous prime is 51520554269. The next prime is 51520554313. The reversal of 51520554300 is 345502515.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 23 ways as a sum of consecutive naturals, for example, 3726474 + ... + 3740273.

It is an arithmetic number, because the mean of its divisors is an integer number (2160379088).

Almost surely, 2^51520554300 is an apocalyptic number.

51520554300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51520554300 is an abundant number, since it is smaller than the sum of its proper divisors (104026740036).

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

51520554300 is a wasteful number, since it uses less digits than its factorization.

51520554300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7466787 (or 7466780 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 51520554300 in words is "fifty-one billion, five hundred twenty million, five hundred fifty-four thousand, three hundred".