2564514321 has 8 divisors (see below), whose sum is σ = 3449612640. Its totient is φ = 1694546112.

The previous prime is 2564514317. The next prime is 2564514349. The reversal of 2564514321 is 1234154652.

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

It is not a de Polignac number, because 2564514321 - 2² = 2564514317 is a prime.

It is a super-2 number, since 2×2564514321² = 13153467405228182082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2564514361) 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, 3782131 + ... + 3782808.

It is an arithmetic number, because the mean of its divisors is an integer number (431201580).

Almost surely, 2^2564514321 is an apocalyptic number.

It is an amenable number.

2564514321 is a deficient number, since it is larger than the sum of its proper divisors (885098319).

2564514321 is a wasteful number, since it uses less digits than its factorization.

2564514321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565055.

The product of its digits is 28800, while the sum is 33.

The square root of 2564514321 is about 50641.0339645628. The cubic root of 2564514321 is about 1368.7843872681.

Adding to 2564514321 its reverse (1234154652), we get a palindrome (3798668973).

The spelling of 2564514321 in words is "two billion, five hundred sixty-four million, five hundred fourteen thousand, three hundred twenty-one".