2572687391 has 2 divisors, whose sum is σ = 2572687392. Its totient is φ = 2572687390.

The previous prime is 2572687283. The next prime is 2572687399. The reversal of 2572687391 is 1937862752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2572687391 - 2²⁶ = 2505578527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2572687399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1286343695 + 1286343696.

It is an arithmetic number, because the mean of its divisors is an integer number (1286343696).

Almost surely, 2^2572687391 is an apocalyptic number.

2572687391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2572687391 is an equidigital number, since it uses as much as digits as its factorization.

2572687391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 50.

The square root of 2572687391 is about 50721.6658933833. The cubic root of 2572687391 is about 1370.2369439397.

The spelling of 2572687391 in words is "two billion, five hundred seventy-two million, six hundred eighty-seven thousand, three hundred ninety-one".