115215801 has 4 divisors (see below), whose sum is σ = 153621072. Its totient is φ = 76810532.

The previous prime is 115215769. The next prime is 115215823. The reversal of 115215801 is 108512511.

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.

It is a cyclic number.

It is not a de Polignac number, because 115215801 - 2⁵ = 115215769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115215301) 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, 19202631 + ... + 19202636.

It is an arithmetic number, because the mean of its divisors is an integer number (38405268).

Almost surely, 2^115215801 is an apocalyptic number.

It is an amenable number.

115215801 is a deficient number, since it is larger than the sum of its proper divisors (38405271).

115215801 is an equidigital number, since it uses as much as digits as its factorization.

115215801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38405270.

The product of its (nonzero) digits is 400, while the sum is 24.

The square root of 115215801 is about 10733.8623523874. The cubic root of 115215801 is about 486.5984051274.

The spelling of 115215801 in words is "one hundred fifteen million, two hundred fifteen thousand, eight hundred one".