2257256571 has 16 divisors (see below), whose sum is σ = 3020224800. Its totient is φ = 1499574528.

The previous prime is 2257256567. The next prime is 2257256581. The reversal of 2257256571 is 1756527522.

It is not a de Polignac number, because 2257256571 - 2² = 2257256567 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2257256581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1824165 + ... + 1825401.

It is an arithmetic number, because the mean of its divisors is an integer number (188764050).

Almost surely, 2^2257256571 is an apocalyptic number.

2257256571 is a deficient number, since it is larger than the sum of its proper divisors (762968229).

2257256571 is a wasteful number, since it uses less digits than its factorization.

2257256571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878.

The product of its digits is 294000, while the sum is 42.

The square root of 2257256571 is about 47510.5943027447. The cubic root of 2257256571 is about 1311.7778961958. Note that the first 3 decimals are identical.

The spelling of 2257256571 in words is "two billion, two hundred fifty-seven million, two hundred fifty-six thousand, five hundred seventy-one".