15313157 has 2 divisors, whose sum is σ = 15313158. Its totient is φ = 15313156.

The previous prime is 15313139. The next prime is 15313159. The reversal of 15313157 is 75131351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10982596 + 4330561 = 3314^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 15313157 - 2⁶ = 15313093 is a prime.

Together with 15313159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15313159) 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 as a sum of consecutive naturals, namely, 7656578 + 7656579.

It is an arithmetic number, because the mean of its divisors is an integer number (7656579).

Almost surely, 2^15313157 is an apocalyptic number.

It is an amenable number.

15313157 is a deficient number, since it is larger than the sum of its proper divisors (1).

15313157 is an equidigital number, since it uses as much as digits as its factorization.

15313157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1575, while the sum is 26.

The square root of 15313157 is about 3913.2029081048. The cubic root of 15313157 is about 248.3256485568.

It can be divided in two parts, 153 and 13157, that multiplied together give a triangular number (2013021 = T₂₀₀₆).

The spelling of 15313157 in words is "fifteen million, three hundred thirteen thousand, one hundred fifty-seven".