115570421 has 4 divisors (see below), whose sum is σ = 115615500. Its totient is φ = 115525344.

The previous prime is 115570393. The next prime is 115570447. The reversal of 115570421 is 124075511.

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 111724900 + 3845521 = 10570^2 + 1961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115570421 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 (115570121) 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, 18446 + ... + 23903.

It is an arithmetic number, because the mean of its divisors is an integer number (28903875).

Almost surely, 2^115570421 is an apocalyptic number.

It is an amenable number.

115570421 is a deficient number, since it is larger than the sum of its proper divisors (45079).

115570421 is an equidigital number, since it uses as much as digits as its factorization.

115570421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45078.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 115570421 is about 10750.3684122917. The cubic root of 115570421 is about 487.0971237352.

The spelling of 115570421 in words is "one hundred fifteen million, five hundred seventy thousand, four hundred twenty-one".