55164100520 has 32 divisors (see below), whose sum is σ = 124126597800. Its totient is φ = 22064329728.

The previous prime is 55164100517. The next prime is 55164100529. The reversal of 55164100520 is 2500146155.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31948702564 + 23215397956 = 178742^2 + 152366^2 .

It is not an unprimeable number, because it can be changed into a prime (55164100529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918452 + ... + 976668.

Almost surely, 2^55164100520 is an apocalyptic number.

It is an amenable number.

55164100520 is an abundant number, since it is smaller than the sum of its proper divisors (68962497280).

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

55164100520 is a wasteful number, since it uses less digits than its factorization.

55164100520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81917 (or 81913 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 55164100520 its reverse (2500146155), we get a palindrome (57664246675).

The spelling of 55164100520 in words is "fifty-five billion, one hundred sixty-four million, one hundred thousand, five hundred twenty".