115724101 has 4 divisors (see below), whose sum is σ = 116785900. Its totient is φ = 114662304.

The previous prime is 115724093. The next prime is 115724111. The reversal of 115724101 is 101427511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27552001 + 88172100 = 5249^2 + 9390^2 .

It is a cyclic number.

It is not a de Polignac number, because 115724101 - 2³ = 115724093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115724111) 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, 530736 + ... + 530953.

It is an arithmetic number, because the mean of its divisors is an integer number (29196475).

Almost surely, 2^115724101 is an apocalyptic number.

It is an amenable number.

115724101 is a deficient number, since it is larger than the sum of its proper divisors (1061799).

115724101 is a wasteful number, since it uses less digits than its factorization.

115724101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061798.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 115724101 is about 10757.5136997356. The cubic root of 115724101 is about 487.3129342323.

The spelling of 115724101 in words is "one hundred fifteen million, seven hundred twenty-four thousand, one hundred one".