115920157 has 2 divisors, whose sum is σ = 115920158. Its totient is φ = 115920156.

The previous prime is 115920151. The next prime is 115920179. The reversal of 115920157 is 751029511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109599961 + 6320196 = 10469^2 + 2514^2 .

It is a cyclic number.

It is not a de Polignac number, because 115920157 - 2¹⁵ = 115887389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115920151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57960078 + 57960079.

It is an arithmetic number, because the mean of its divisors is an integer number (57960079).

Almost surely, 2^115920157 is an apocalyptic number.

It is an amenable number.

115920157 is a deficient number, since it is larger than the sum of its proper divisors (1).

115920157 is an equidigital number, since it uses as much as digits as its factorization.

115920157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 115920157 is about 10766.6223580100. The cubic root of 115920157 is about 487.5879755319.

Adding to 115920157 its reverse (751029511), we get a palindrome (866949668).

It can be divided in two parts, 1159 and 20157, that added together give a square (21316 = 146²).

The spelling of 115920157 in words is "one hundred fifteen million, nine hundred twenty thousand, one hundred fifty-seven".