2455555809 has 32 divisors (see below), whose sum is σ = 3789950976. Its totient is φ = 1385236800.

The previous prime is 2455555799. The next prime is 2455555819. The reversal of 2455555809 is 9085555542.

2455555809 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2455555799) and next prime (2455555819).

It is not a de Polignac number, because 2455555809 - 2⁵ = 2455555777 is a prime.

It is a super-2 number, since 2×2455555809² = 12059508662227288962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2455555819) 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, 527239 + ... + 531875.

It is an arithmetic number, because the mean of its divisors is an integer number (118435968).

Almost surely, 2^2455555809 is an apocalyptic number.

It is an amenable number.

2455555809 is a deficient number, since it is larger than the sum of its proper divisors (1334395167).

2455555809 is a wasteful number, since it uses less digits than its factorization.

2455555809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965.

The product of its (nonzero) digits is 1800000, while the sum is 48.

The square root of 2455555809 is about 49553.5650483394. The cubic root of 2455555809 is about 1349.1179989184.

The spelling of 2455555809 in words is "two billion, four hundred fifty-five million, five hundred fifty-five thousand, eight hundred nine".