2573524781 has 2 divisors, whose sum is σ = 2573524782. Its totient is φ = 2573524780.

The previous prime is 2573524747. The next prime is 2573524829. The reversal of 2573524781 is 1874253752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2526670756 + 46854025 = 50266^2 + 6845^2 .

It is a cyclic number.

It is not a de Polignac number, because 2573524781 - 2²⁶ = 2506415917 is a prime.

It is a super-2 number, since 2×2573524781² = 13246059596842195922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2573524721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1286762390 + 1286762391.

It is an arithmetic number, because the mean of its divisors is an integer number (1286762391).

Almost surely, 2^2573524781 is an apocalyptic number.

It is an amenable number.

2573524781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2573524781 is an equidigital number, since it uses as much as digits as its factorization.

2573524781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 44.

The square root of 2573524781 is about 50729.9199782535. The cubic root of 2573524781 is about 1370.3855950154.

The spelling of 2573524781 in words is "two billion, five hundred seventy-three million, five hundred twenty-four thousand, seven hundred eighty-one".