2564072473 has 4 divisors (see below), whose sum is σ = 2626610868. Its totient is φ = 2501534080.

The previous prime is 2564072471. The next prime is 2564072503. The reversal of 2564072473 is 3742704652.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 514518489 + 2049553984 = 22683^2 + 45272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564072473 - 2¹ = 2564072471 is a prime.

It is a super-3 number, since 3×2564072473³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2564072471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31269136 + ... + 31269217.

It is an arithmetic number, because the mean of its divisors is an integer number (656652717).

Almost surely, 2^2564072473 is an apocalyptic number.

It is an amenable number.

2564072473 is a deficient number, since it is larger than the sum of its proper divisors (62538395).

2564072473 is an equidigital number, since it uses as much as digits as its factorization.

2564072473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62538394.

The product of its (nonzero) digits is 282240, while the sum is 40.

The square root of 2564072473 is about 50636.6712274810. The cubic root of 2564072473 is about 1368.7057720730.

The spelling of 2564072473 in words is "two billion, five hundred sixty-four million, seventy-two thousand, four hundred seventy-three".