2991912555 has 32 divisors (see below), whose sum is σ = 4852224000. Its totient is φ = 1574051072.

The previous prime is 2991912529. The next prime is 2991912559. The reversal of 2991912555 is 5552191992.

It is a cyclic number.

It is not a de Polignac number, because 2991912555 - 2⁸ = 2991912299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2991912559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621046 + ... + 625844.

It is an arithmetic number, because the mean of its divisors is an integer number (151632000).

Almost surely, 2^2991912555 is an apocalyptic number.

2991912555 is a deficient number, since it is larger than the sum of its proper divisors (1860311445).

2991912555 is a wasteful number, since it uses less digits than its factorization.

2991912555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363.

The product of its digits is 364500, while the sum is 48.

The square root of 2991912555 is about 54698.3779924049. The cubic root of 2991912555 is about 1440.9523912815.

The spelling of 2991912555 in words is "two billion, nine hundred ninety-one million, nine hundred twelve thousand, five hundred fifty-five".