2513271257 has 4 divisors (see below), whose sum is σ = 2872310016. Its totient is φ = 2154232500.

The previous prime is 2513271253. The next prime is 2513271263. The reversal of 2513271257 is 7521723152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2513271257 - 2² = 2513271253 is a prime.

It is a super-2 number, since 2×2513271257² = 12633064822524720098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2513271251) 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, 179519369 + ... + 179519382.

It is an arithmetic number, because the mean of its divisors is an integer number (718077504).

Almost surely, 2^2513271257 is an apocalyptic number.

It is an amenable number.

2513271257 is a deficient number, since it is larger than the sum of its proper divisors (359038759).

2513271257 is an equidigital number, since it uses as much as digits as its factorization.

2513271257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359038758.

The product of its digits is 29400, while the sum is 35.

The square root of 2513271257 is about 50132.5369096757. The cubic root of 2513271257 is about 1359.6061534370.

The spelling of 2513271257 in words is "two billion, five hundred thirteen million, two hundred seventy-one thousand, two hundred fifty-seven".