2555306121 has 4 divisors (see below), whose sum is σ = 3407074832. Its totient is φ = 1703537412.

The previous prime is 2555306111. The next prime is 2555306137. The reversal of 2555306121 is 1216035552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2555306121 - 2¹⁰ = 2555305097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2555306101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425884351 + ... + 425884356.

It is an arithmetic number, because the mean of its divisors is an integer number (851768708).

Almost surely, 2^2555306121 is an apocalyptic number.

It is an amenable number.

2555306121 is a deficient number, since it is larger than the sum of its proper divisors (851768711).

2555306121 is an equidigital number, since it uses as much as digits as its factorization.

2555306121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851768710.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 2555306121 is about 50550.0358160111. The cubic root of 2555306121 is about 1367.1441603836.

The spelling of 2555306121 in words is "two billion, five hundred fifty-five million, three hundred six thousand, one hundred twenty-one".