55815952516 has 9 divisors (see below), whose sum is σ = 97678743799. Its totient is φ = 27907740004.

The previous prime is 55815952469. The next prime is 55815952519. The reversal of 55815952516 is 61525951855.

The square root of 55815952516 is 236254.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55815952519) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 413445 + ... + 531571.

Almost surely, 2^55815952516 is an apocalyptic number.

55815952516 is the 236254-th square number.

It is an amenable number.

55815952516 is a deficient number, since it is larger than the sum of its proper divisors (41862791283).

55815952516 is an frugal number, since it uses more digits than its factorization.

55815952516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236258 (or 118129 counting only the distinct ones).

The product of its digits is 2700000, while the sum is 52.

The spelling of 55815952516 in words is "fifty-five billion, eight hundred fifteen million, nine hundred fifty-two thousand, five hundred sixteen".