2556565023 has 8 divisors (see below), whose sum is σ = 3556960128. Its totient is φ = 1630273304.

The previous prime is 2556565019. The next prime is 2556565031. The reversal of 2556565023 is 3205656552.

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

It is not a de Polignac number, because 2556565023 - 2² = 2556565019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556565003) 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, 18525765 + ... + 18525902.

It is an arithmetic number, because the mean of its divisors is an integer number (444620016).

Almost surely, 2^2556565023 is an apocalyptic number.

2556565023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2556565023 is a deficient number, since it is larger than the sum of its proper divisors (1000395105).

2556565023 is a wasteful number, since it uses less digits than its factorization.

2556565023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37051693.

The product of its (nonzero) digits is 270000, while the sum is 39.

The square root of 2556565023 is about 50562.4863213826. The cubic root of 2556565023 is about 1367.3686368094.

The spelling of 2556565023 in words is "two billion, five hundred fifty-six million, five hundred sixty-five thousand, twenty-three".