2556364351 has 4 divisors (see below), whose sum is σ = 2566311552. Its totient is φ = 2546417152.

The previous prime is 2556364339. The next prime is 2556364379. The reversal of 2556364351 is 1534636552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2556364351 - 2²⁹ = 2019493439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556364051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4973215 + ... + 4973728.

It is an arithmetic number, because the mean of its divisors is an integer number (641577888).

Almost surely, 2^2556364351 is an apocalyptic number.

2556364351 is a deficient number, since it is larger than the sum of its proper divisors (9947201).

2556364351 is an equidigital number, since it uses as much as digits as its factorization.

2556364351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9947200.

The product of its digits is 324000, while the sum is 40.

The square root of 2556364351 is about 50560.5018863539. The cubic root of 2556364351 is about 1367.3328596662.

The spelling of 2556364351 in words is "two billion, five hundred fifty-six million, three hundred sixty-four thousand, three hundred fifty-one".