1525157 has 2 divisors, whose sum is σ = 1525158. Its totient is φ = 1525156.

The previous prime is 1525133. The next prime is 1525163. The reversal of 1525157 is 7515251.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1522756 + 2401 = 1234^2 + 49^2 .

It is an emirp because it is prime and its reverse (7515251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1525157 - 2⁶ = 1525093 is a prime.

It is a super-2 number, since 2×1525157² = 4652207749298, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1525057) 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, 762578 + 762579.

It is an arithmetic number, because the mean of its divisors is an integer number (762579).

2^1525157 is an apocalyptic number.

It is an amenable number.

1525157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525157 is an equidigital number, since it uses as much as digits as its factorization.

1525157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1750, while the sum is 26.

The square root of 1525157 is about 1234.9724693288. The cubic root of 1525157 is about 115.1078257754.

Subtracting from 1525157 its sum of digits (26), we obtain a triangular number (1525131 = T₁₇₄₆).

The spelling of 1525157 in words is "one million, five hundred twenty-five thousand, one hundred fifty-seven".