2564206453 has 4 divisors (see below), whose sum is σ = 2564665708. Its totient is φ = 2563747200.

The previous prime is 2564206417. The next prime is 2564206499. The reversal of 2564206453 is 3546024652.

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 1948074769 + 616131684 = 44137^2 + 24822^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564206453 - 2²¹ = 2562109301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564206753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221148 + ... + 232453.

It is an arithmetic number, because the mean of its divisors is an integer number (641166427).

Almost surely, 2^2564206453 is an apocalyptic number.

It is an amenable number.

2564206453 is a deficient number, since it is larger than the sum of its proper divisors (459255).

2564206453 is an equidigital number, since it uses as much as digits as its factorization.

2564206453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459254.

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 2564206453 is about 50637.9941644611. The cubic root of 2564206453 is about 1368.7296112334.

The spelling of 2564206453 in words is "two billion, five hundred sixty-four million, two hundred six thousand, four hundred fifty-three".