55205000520 has 32 divisors (see below), whose sum is σ = 165615001920. Its totient is φ = 14721333440.

The previous prime is 55205000509. The next prime is 55205000531. The reversal of 55205000520 is 2500050255.

It is an interprime number because it is at equal distance from previous prime (55205000509) and next prime (55205000531).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 230020716 + ... + 230020955.

It is an arithmetic number, because the mean of its divisors is an integer number (5175468810).

Almost surely, 2^55205000520 is an apocalyptic number.

It is an amenable number.

55205000520 is an abundant number, since it is smaller than the sum of its proper divisors (110410001400).

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

55205000520 is a wasteful number, since it uses less digits than its factorization.

55205000520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460041685 (or 460041681 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

Adding to 55205000520 its reverse (2500050255), we get a palindrome (57705050775).

The spelling of 55205000520 in words is "fifty-five billion, two hundred five million, five hundred twenty", and thus it is an aban number.