115240661 has 4 divisors (see below), whose sum is σ = 115328832. Its totient is φ = 115152492.

The previous prime is 115240571. The next prime is 115240673. The reversal of 115240661 is 166042511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166042511 = 1087 ⋅152753.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115240661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115240661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115240261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42095 + ... + 44748.

It is an arithmetic number, because the mean of its divisors is an integer number (28832208).

Almost surely, 2^115240661 is an apocalyptic number.

It is an amenable number.

115240661 is a deficient number, since it is larger than the sum of its proper divisors (88171).

115240661 is an equidigital number, since it uses as much as digits as its factorization.

115240661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88170.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 115240661 is about 10735.0203073865. The cubic root of 115240661 is about 486.6334002302.

The spelling of 115240661 in words is "one hundred fifteen million, two hundred forty thousand, six hundred sixty-one".