2564755 has 8 divisors (see below), whose sum is σ = 3153024. Its totient is φ = 2001600.

The previous prime is 2564747. The next prime is 2564759. The reversal of 2564755 is 5574652.

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

It is not a de Polignac number, because 2564755 - 2³ = 2564747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2564755.

It is not an unprimeable number, because it can be changed into a prime (2564759) 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, 6051 + ... + 6460.

It is an arithmetic number, because the mean of its divisors is an integer number (394128).

2^2564755 is an apocalyptic number.

2564755 is a deficient number, since it is larger than the sum of its proper divisors (588269).

2564755 is a wasteful number, since it uses less digits than its factorization.

2564755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12557.

The product of its digits is 42000, while the sum is 34.

The square root of 2564755 is about 1601.4852481369. The cubic root of 2564755 is about 136.8827205948.

The spelling of 2564755 in words is "two million, five hundred sixty-four thousand, seven hundred fifty-five".