55415315532 has 48 divisors (see below), whose sum is σ = 130912733952. Its totient is φ = 18241903680.

The previous prime is 55415315479. The next prime is 55415315533. The reversal of 55415315532 is 23551351455.

It is a super-2 number, since 2×55415315532² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55415315533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2839833 + ... + 2859279.

It is an arithmetic number, because the mean of its divisors is an integer number (2727348624).

Almost surely, 2^55415315532 is an apocalyptic number.

It is an amenable number.

55415315532 is an abundant number, since it is smaller than the sum of its proper divisors (75497418420).

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

55415315532 is a wasteful number, since it uses less digits than its factorization.

55415315532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22398 (or 22396 counting only the distinct ones).

The product of its digits is 225000, while the sum is 39.

Adding to 55415315532 its reverse (23551351455), we get a palindrome (78966666987).

The spelling of 55415315532 in words is "fifty-five billion, four hundred fifteen million, three hundred fifteen thousand, five hundred thirty-two".