115530251 has 8 divisors (see below), whose sum is σ = 119138208. Its totient is φ = 111960000.

The previous prime is 115530199. The next prime is 115530253. The reversal of 115530251 is 152035511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115530251 is a prime.

It is a super-2 number, since 2×115530251² = 26694477792246002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115530253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3140 + ... + 15521.

It is an arithmetic number, because the mean of its divisors is an integer number (14892276).

Almost surely, 2^115530251 is an apocalyptic number.

115530251 is a deficient number, since it is larger than the sum of its proper divisors (3607957).

115530251 is a wasteful number, since it uses less digits than its factorization.

115530251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18853.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 115530251 is about 10748.4999418524. The cubic root of 115530251 is about 487.0406820761.

Adding to 115530251 its reverse (152035511), we get a palindrome (267565762).

The spelling of 115530251 in words is "one hundred fifteen million, five hundred thirty thousand, two hundred fifty-one".