2564876441 has 4 divisors (see below), whose sum is σ = 2676392832. Its totient is φ = 2453360052.

The previous prime is 2564876423. The next prime is 2564876449. The reversal of 2564876441 is 1446784652.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-2564876441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2564876449) 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, 55758161 + ... + 55758206.

It is an arithmetic number, because the mean of its divisors is an integer number (669098208).

Almost surely, 2^2564876441 is an apocalyptic number.

It is an amenable number.

2564876441 is a deficient number, since it is larger than the sum of its proper divisors (111516391).

2564876441 is a wasteful number, since it uses less digits than its factorization.

2564876441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111516390.

The product of its digits is 1290240, while the sum is 47.

The square root of 2564876441 is about 50644.6091997954. The cubic root of 2564876441 is about 1368.8488102364.

The spelling of 2564876441 in words is "two billion, five hundred sixty-four million, eight hundred seventy-six thousand, four hundred forty-one".