115150561 has 12 divisors (see below), whose sum is σ = 119936700. Its totient is φ = 110548928.

The previous prime is 115150547. The next prime is 115150577. The reversal of 115150561 is 165051511.

It can be written as a sum of positive squares in 6 ways, for example, as 553536 + 114597025 = 744^2 + 10705^2 .

It is not a de Polignac number, because 115150561 - 2¹³ = 115142369 is a prime.

It is a super-2 number, since 2×115150561² = 26519303397229442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115150531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225975 + ... + 226483.

It is an arithmetic number, because the mean of its divisors is an integer number (9994725).

Almost surely, 2^115150561 is an apocalyptic number.

It is an amenable number.

115150561 is a deficient number, since it is larger than the sum of its proper divisors (4786139).

115150561 is an equidigital number, since it uses as much as digits as its factorization.

115150561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 115150561 is about 10730.8229414151. The cubic root of 115150561 is about 486.5065436713.

The spelling of 115150561 in words is "one hundred fifteen million, one hundred fifty thousand, five hundred sixty-one".