2155322554 has 64 divisors (see below), whose sum is σ = 4180377600. Its totient is φ = 808819200.

The previous prime is 2155322489. The next prime is 2155322567. The reversal of 2155322554 is 4552235512.

2155322554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1140042 + ... + 1141930.

It is an arithmetic number, because the mean of its divisors is an integer number (65318400).

Almost surely, 2^2155322554 is an apocalyptic number.

2155322554 is a deficient number, since it is larger than the sum of its proper divisors (2025055046).

2155322554 is a wasteful number, since it uses less digits than its factorization.

2155322554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179.

The product of its digits is 60000, while the sum is 34.

The square root of 2155322554 is about 46425.4515756174. The cubic root of 2155322554 is about 1291.7270608034.

The spelling of 2155322554 in words is "two billion, one hundred fifty-five million, three hundred twenty-two thousand, five hundred fifty-four".