115213577 has 4 divisors (see below), whose sum is σ = 118930176. Its totient is φ = 111496980.

The previous prime is 115213561. The next prime is 115213603. The reversal of 115213577 is 775312511.

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 115213577 - 2⁴ = 115213561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115213537) 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, 1858253 + ... + 1858314.

It is an arithmetic number, because the mean of its divisors is an integer number (29732544).

Almost surely, 2^115213577 is an apocalyptic number.

It is an amenable number.

115213577 is a deficient number, since it is larger than the sum of its proper divisors (3716599).

115213577 is an equidigital number, since it uses as much as digits as its factorization.

115213577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716598.

The product of its digits is 7350, while the sum is 32.

The square root of 115213577 is about 10733.7587545091. The cubic root of 115213577 is about 486.5952741858.

The spelling of 115213577 in words is "one hundred fifteen million, two hundred thirteen thousand, five hundred seventy-seven".