2555554421 has 4 divisors (see below), whose sum is σ = 2920633632. Its totient is φ = 2190475212.

The previous prime is 2555554387. The next prime is 2555554447. The reversal of 2555554421 is 1244555552.

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 a cyclic number.

It is not a de Polignac number, because 2555554421 - 2¹⁸ = 2555292277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555554451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182539595 + ... + 182539608.

It is an arithmetic number, because the mean of its divisors is an integer number (730158408).

Almost surely, 2^2555554421 is an apocalyptic number.

It is an amenable number.

2555554421 is a deficient number, since it is larger than the sum of its proper divisors (365079211).

2555554421 is an equidigital number, since it uses as much as digits as its factorization.

2555554421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365079210.

The product of its digits is 200000, while the sum is 38.

The square root of 2555554421 is about 50552.4917387857. The cubic root of 2555554421 is about 1367.1884409100.

The spelling of 2555554421 in words is "two billion, five hundred fifty-five million, five hundred fifty-four thousand, four hundred twenty-one".