115137250 has 32 divisors (see below), whose sum is σ = 222983280. Its totient is φ = 44464000.

The previous prime is 115137247. The next prime is 115137259. The reversal of 115137250 is 52731511.

It can be written as a sum of positive squares in 8 ways, for example, as 22458121 + 92679129 = 4739^2 + 9627^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (115137259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691 + ... + 15190.

Almost surely, 2^115137250 is an apocalyptic number.

115137250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115137250 is a deficient number, since it is larger than the sum of its proper divisors (107846030).

115137250 is a wasteful number, since it uses less digits than its factorization.

115137250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15927 (or 15917 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 115137250 is about 10730.2027007881. The cubic root of 115137250 is about 486.4877968002.

Adding to 115137250 its reverse (52731511), we get a palindrome (167868761).

The spelling of 115137250 in words is "one hundred fifteen million, one hundred thirty-seven thousand, two hundred fifty".