4155257 has 2 divisors, whose sum is σ = 4155258. Its totient is φ = 4155256.

The previous prime is 4155251. The next prime is 4155269. The reversal of 4155257 is 7525514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4116841 + 38416 = 2029^2 + 196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4155257 is a prime.

It is an Ulam number.

It is equal to p₂₉₃₃₅₇ and since 4155257 and 293357 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (4155251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077628 + 2077629.

It is an arithmetic number, because the mean of its divisors is an integer number (2077629).

Almost surely, 2^4155257 is an apocalyptic number.

It is an amenable number.

4155257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155257 is an equidigital number, since it uses as much as digits as its factorization.

4155257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7000, while the sum is 29.

The square root of 4155257 is about 2038.4447502937. Note that the first 3 decimals coincide. The cubic root of 4155257 is about 160.7678843356.

The spelling of 4155257 in words is "four million, one hundred fifty-five thousand, two hundred fifty-seven".