2571957 has 6 divisors (see below), whose sum is σ = 3715062. Its totient is φ = 1714632.

The previous prime is 2571953. The next prime is 2571979. The reversal of 2571957 is 7591752.

It can be written as a sum of positive squares in only one way, i.e., 1418481 + 1153476 = 1191^2 + 1074^2 .

It is not a de Polignac number, because 2571957 - 2² = 2571953 is a prime.

It is a super-2 number, since 2×2571957² = 13229925619698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2571953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142878 + ... + 142895.

It is an arithmetic number, because the mean of its divisors is an integer number (619177).

2^2571957 is an apocalyptic number.

It is an amenable number.

2571957 is a deficient number, since it is larger than the sum of its proper divisors (1143105).

2571957 is a wasteful number, since it uses less digits than its factorization.

2571957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285779 (or 285776 counting only the distinct ones).

The product of its digits is 22050, while the sum is 36.

The square root of 2571957 is about 1603.7322095662. The cubic root of 2571957 is about 137.0107260681.

The spelling of 2571957 in words is "two million, five hundred seventy-one thousand, nine hundred fifty-seven".