15240157 has 2 divisors, whose sum is σ = 15240158. Its totient is φ = 15240156.

The previous prime is 15240133. The next prime is 15240163. The reversal of 15240157 is 75104251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11978521 + 3261636 = 3461^2 + 1806^2 .

It is a cyclic number.

It is not a de Polignac number, because 15240157 - 2¹¹ = 15238109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15240107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7620078 + 7620079.

It is an arithmetic number, because the mean of its divisors is an integer number (7620079).

Almost surely, 2^15240157 is an apocalyptic number.

It is an amenable number.

15240157 is a deficient number, since it is larger than the sum of its proper divisors (1).

15240157 is an equidigital number, since it uses as much as digits as its factorization.

15240157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 15240157 is about 3903.8643675210. The cubic root of 15240157 is about 247.9304186081.

The spelling of 15240157 in words is "fifteen million, two hundred forty thousand, one hundred fifty-seven".