115243651 has 4 divisors (see below), whose sum is σ = 119217600. Its totient is φ = 111269704.

The previous prime is 115243643. The next prime is 115243657. The reversal of 115243651 is 156342511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156342511 = 13 ⋅12026347.

It is a cyclic number.

It is not a de Polignac number, because 115243651 - 2³ = 115243643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115243657) 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, 1986931 + ... + 1986988.

It is an arithmetic number, because the mean of its divisors is an integer number (29804400).

Almost surely, 2^115243651 is an apocalyptic number.

115243651 is a deficient number, since it is larger than the sum of its proper divisors (3973949).

115243651 is an equidigital number, since it uses as much as digits as its factorization.

115243651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973948.

The product of its digits is 3600, while the sum is 28.

The square root of 115243651 is about 10735.1595703091. The cubic root of 115243651 is about 486.6376088758.

The spelling of 115243651 in words is "one hundred fifteen million, two hundred forty-three thousand, six hundred fifty-one".