2155554808 has 32 divisors (see below), whose sum is σ = 4420494000. Its totient is φ = 977263360.

The previous prime is 2155554803. The next prime is 2155554809. The reversal of 2155554808 is 8084555512.

2155554808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155554803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2748 + ... + 65716.

Almost surely, 2^2155554808 is an apocalyptic number.

It is an amenable number.

2155554808 is an abundant number, since it is smaller than the sum of its proper divisors (2264939192).

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

2155554808 is a wasteful number, since it uses less digits than its factorization.

2155554808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63375 (or 63371 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 43.

The square root of 2155554808 is about 46427.9528732422. The cubic root of 2155554808 is about 1291.7734572620.

The spelling of 2155554808 in words is "two billion, one hundred fifty-five million, five hundred fifty-four thousand, eight hundred eight".