15427157 has 2 divisors, whose sum is σ = 15427158. Its totient is φ = 15427156.

The previous prime is 15427129. The next prime is 15427189. The reversal of 15427157 is 75172451.

It is an a-pointer prime, because the next prime (15427189) can be obtained adding 15427157 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9006001 + 6421156 = 3001^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 15427157 - 2²² = 11232853 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15427117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7713578 + 7713579.

It is an arithmetic number, because the mean of its divisors is an integer number (7713579).

Almost surely, 2^15427157 is an apocalyptic number.

It is an amenable number.

15427157 is a deficient number, since it is larger than the sum of its proper divisors (1).

15427157 is an equidigital number, since it uses as much as digits as its factorization.

15427157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 32.

The square root of 15427157 is about 3927.7419721769. The cubic root of 15427157 is about 248.9403522658.

The spelling of 15427157 in words is "fifteen million, four hundred twenty-seven thousand, one hundred fifty-seven".