55132312515 has 64 divisors (see below), whose sum is σ = 103170585600. Its totient is φ = 25129896960.

The previous prime is 55132312513. The next prime is 55132312561. The reversal of 55132312515 is 51521323155.

It is a happy number.

It is not a de Polignac number, because 55132312515 - 2¹ = 55132312513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55132312513) 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 63 ways as a sum of consecutive naturals, for example, 1769875 + ... + 1800755.

It is an arithmetic number, because the mean of its divisors is an integer number (1612040400).

Almost surely, 2^55132312515 is an apocalyptic number.

55132312515 is a deficient number, since it is larger than the sum of its proper divisors (48038273085).

55132312515 is a wasteful number, since it uses less digits than its factorization.

55132312515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31257 (or 31243 counting only the distinct ones).

The product of its digits is 22500, while the sum is 33.

The spelling of 55132312515 in words is "fifty-five billion, one hundred thirty-two million, three hundred twelve thousand, five hundred fifteen".