5991561054 has 12 divisors (see below), whose sum is σ = 12981715656. Its totient is φ = 1997187012.

The previous prime is 5991561029. The next prime is 5991561091. The reversal of 5991561054 is 4501651995.

It is a happy number.

5991561054 is a `hidden beast` number, since 599 + 1 + 5 + 6 + 1 + 0 + 54 = 666.

It is a super-3 number, since 3×5991561054³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166432234 + ... + 166432269.

It is an arithmetic number, because the mean of its divisors is an integer number (1081809638).

Almost surely, 2^5991561054 is an apocalyptic number.

5991561054 is an abundant number, since it is smaller than the sum of its proper divisors (6990154602).

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

5991561054 is a wasteful number, since it uses less digits than its factorization.

5991561054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332864511 (or 332864508 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The square root of 5991561054 is about 77405.1745944675. The cubic root of 5991561054 is about 1816.2682718600.

The spelling of 5991561054 in words is "five billion, nine hundred ninety-one million, five hundred sixty-one thousand, fifty-four".