2154553555 has 32 divisors (see below), whose sum is σ = 3292047360. Its totient is φ = 1314510720.

The previous prime is 2154553553. The next prime is 2154553561. The reversal of 2154553555 is 5553554512.

It is not a de Polignac number, because 2154553555 - 2¹ = 2154553553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154553553) 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, 41440 + ... + 77629.

It is an arithmetic number, because the mean of its divisors is an integer number (102876480).

Almost surely, 2^2154553555 is an apocalyptic number.

2154553555 is a deficient number, since it is larger than the sum of its proper divisors (1137493805).

2154553555 is a wasteful number, since it uses less digits than its factorization.

2154553555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119139.

The product of its digits is 375000, while the sum is 40.

The square root of 2154553555 is about 46417.1687525209. The cubic root of 2154553555 is about 1291.5734171368.

The spelling of 2154553555 in words is "two billion, one hundred fifty-four million, five hundred fifty-three thousand, five hundred fifty-five".