3915157 has 2 divisors, whose sum is σ = 3915158. Its totient is φ = 3915156.

The previous prime is 3915143. The next prime is 3915167. The reversal of 3915157 is 7515193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3538161 + 376996 = 1881^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 3915157 - 2¹¹ = 3913109 is a prime.

It is an Ulam number.

3915157 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3915127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957578 + 1957579.

It is an arithmetic number, because the mean of its divisors is an integer number (1957579).

Almost surely, 2^3915157 is an apocalyptic number.

It is an amenable number.

3915157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3915157 is an equidigital number, since it uses as much as digits as its factorization.

3915157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4725, while the sum is 31.

The square root of 3915157 is about 1978.6755671408. The cubic root of 3915157 is about 157.6097429494.

The spelling of 3915157 in words is "three million, nine hundred fifteen thousand, one hundred fifty-seven".