2257042261 has 4 divisors (see below), whose sum is σ = 2257141024. Its totient is φ = 2256943500.

The previous prime is 2257042231. The next prime is 2257042301. The reversal of 2257042261 is 1622407522.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2257042261 - 2⁷ = 2257042133 is a prime.

It is a super-3 number, since 3×2257042261³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257042201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4486 + ... + 67336.

It is an arithmetic number, because the mean of its divisors is an integer number (564285256).

Almost surely, 2^2257042261 is an apocalyptic number.

It is an amenable number.

2257042261 is a deficient number, since it is larger than the sum of its proper divisors (98763).

2257042261 is an equidigital number, since it uses as much as digits as its factorization.

2257042261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98762.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 2257042261 is about 47508.3388575101. The cubic root of 2257042261 is about 1311.7363803099.

Adding to 2257042261 its reverse (1622407522), we get a palindrome (3879449783).

The spelling of 2257042261 in words is "two billion, two hundred fifty-seven million, forty-two thousand, two hundred sixty-one".