2556361451 has 8 divisors (see below), whose sum is σ = 3093412320. Its totient is φ = 2062274688.

The previous prime is 2556361391. The next prime is 2556361477. The reversal of 2556361451 is 1541636552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2556361451 - 2¹⁴ = 2556345067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556361651) 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, 10740896 + ... + 10741133.

It is an arithmetic number, because the mean of its divisors is an integer number (386676540).

Almost surely, 2^2556361451 is an apocalyptic number.

2556361451 is a deficient number, since it is larger than the sum of its proper divisors (537050869).

2556361451 is a wasteful number, since it uses less digits than its factorization.

2556361451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21482053.

The product of its digits is 108000, while the sum is 38.

The square root of 2556361451 is about 50560.4732078330. The cubic root of 2556361451 is about 1367.3323426212.

The spelling of 2556361451 in words is "two billion, five hundred fifty-six million, three hundred sixty-one thousand, four hundred fifty-one".