4156257 has 16 divisors (see below), whose sum is σ = 6469632. Its totient is φ = 2323920.

The previous prime is 4156249. The next prime is 4156277. The reversal of 4156257 is 7526514.

It is not a de Polignac number, because 4156257 - 2³ = 4156249 is a prime.

4156257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4156277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119 + ... + 3092.

It is an arithmetic number, because the mean of its divisors is an integer number (404352).

Almost surely, 2^4156257 is an apocalyptic number.

4156257 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

4156257 is a deficient number, since it is larger than the sum of its proper divisors (2313375).

4156257 is a wasteful number, since it uses less digits than its factorization.

4156257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268.

The product of its digits is 8400, while the sum is 30.

The square root of 4156257 is about 2038.6900205769. The cubic root of 4156257 is about 160.7807800473.

The spelling of 4156257 in words is "four million, one hundred fifty-six thousand, two hundred fifty-seven".