115351561 has 8 divisors (see below), whose sum is σ = 124334784. Its totient is φ = 106384080.

The previous prime is 115351553. The next prime is 115351567. The reversal of 115351561 is 165153511.

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

It is a cyclic number.

It is not a de Polignac number, because 115351561 - 2³ = 115351553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115351567) 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, 14526 + ... + 21016.

It is an arithmetic number, because the mean of its divisors is an integer number (15541848).

Almost surely, 2^115351561 is an apocalyptic number.

It is an amenable number.

115351561 is a deficient number, since it is larger than the sum of its proper divisors (8983223).

115351561 is a wasteful number, since it uses less digits than its factorization.

115351561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871.

The product of its digits is 2250, while the sum is 28.

The square root of 115351561 is about 10740.1844025138. The cubic root of 115351561 is about 486.7894514632.

The spelling of 115351561 in words is "one hundred fifteen million, three hundred fifty-one thousand, five hundred sixty-one".