55990917376 has 81 divisors (see below), whose sum is σ = 117015642219. Its totient is φ = 26736619008.

The previous prime is 55990917361. The next prime is 55990917403. The reversal of 55990917376 is 67371909955.

The square root of 55990917376 is 236624.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 87077311 + ... + 87077953.

Almost surely, 2^55990917376 is an apocalyptic number.

55990917376 is the 236624-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55990917376

55990917376 is an abundant number, since it is smaller than the sum of its proper divisors (61024724843).

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

55990917376 is an frugal number, since it uses more digits than its factorization.

55990917376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 16074450, while the sum is 61.

The spelling of 55990917376 in words is "fifty-five billion, nine hundred ninety million, nine hundred seventeen thousand, three hundred seventy-six".