2151555355 has 16 divisors (see below), whose sum is σ = 2710278144. Its totient is φ = 1636534240.

The previous prime is 2151555349. The next prime is 2151555379. The reversal of 2151555355 is 5535551512.

It is not a de Polignac number, because 2151555355 - 2⁵ = 2151555323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36811 + ... + 75220.

It is an arithmetic number, because the mean of its divisors is an integer number (169392384).

Almost surely, 2^2151555355 is an apocalyptic number.

2151555355 is a deficient number, since it is larger than the sum of its proper divisors (558722789).

2151555355 is a wasteful number, since it uses less digits than its factorization.

2151555355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112226.

The product of its digits is 93750, while the sum is 37.

The square root of 2151555355 is about 46384.8612695996. The cubic root of 2151555355 is about 1290.9740365011.

The spelling of 2151555355 in words is "two billion, one hundred fifty-one million, five hundred fifty-five thousand, three hundred fifty-five".