2256157 has 4 divisors (see below), whose sum is σ = 2298780. Its totient is φ = 2213536.

The previous prime is 2256131. The next prime is 2256169. The reversal of 2256157 is 7516522.

2256157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1313316 + 942841 = 1146^2 + 971^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256157 - 2⁷ = 2256029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21232 + ... + 21337.

It is an arithmetic number, because the mean of its divisors is an integer number (574695).

2^2256157 is an apocalyptic number.

It is an amenable number.

2256157 is a deficient number, since it is larger than the sum of its proper divisors (42623).

2256157 is an equidigital number, since it uses as much as digits as its factorization.

2256157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42622.

The product of its digits is 4200, while the sum is 28.

The square root of 2256157 is about 1502.0509312270. The cubic root of 2256157 is about 131.1564860717.

The spelling of 2256157 in words is "two million, two hundred fifty-six thousand, one hundred fifty-seven".