2571402717 has 12 divisors (see below), whose sum is σ = 3999959964. Its totient is φ = 1582401600.

The previous prime is 2571402697. The next prime is 2571402719. The reversal of 2571402717 is 7172041752.

It can be written as a sum of positive squares in 2 ways, for example, as 380601081 + 2190801636 = 19509^2 + 46806^2 .

It is not a de Polignac number, because 2571402717 - 2²⁶ = 2504293853 is a prime.

It is a super-2 number, since 2×2571402717² = 13224223865989964178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2571402719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10988784 + ... + 10989017.

It is an arithmetic number, because the mean of its divisors is an integer number (333329997).

Almost surely, 2^2571402717 is an apocalyptic number.

It is an amenable number.

2571402717 is a deficient number, since it is larger than the sum of its proper divisors (1428557247).

2571402717 is a wasteful number, since it uses less digits than its factorization.

2571402717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21977820 (or 21977817 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The square root of 2571402717 is about 50709.0003549666. Note that the first 3 decimals coincide. The cubic root of 2571402717 is about 1370.0088295735.

Subtracting from 2571402717 its sum of digits (36), we obtain a square (2571402681 = 50709²).

The spelling of 2571402717 in words is "two billion, five hundred seventy-one million, four hundred two thousand, seven hundred seventeen".