115720237 has 4 divisors (see below), whose sum is σ = 119710620. Its totient is φ = 111729856.

The previous prime is 115720229. The next prime is 115720243. The reversal of 115720237 is 732027511.

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 18224361 + 97495876 = 4269^2 + 9874^2 .

It is a cyclic number.

It is not a de Polignac number, because 115720237 - 2³ = 115720229 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 (115720277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1995148 + ... + 1995205.

It is an arithmetic number, because the mean of its divisors is an integer number (29927655).

Almost surely, 2^115720237 is an apocalyptic number.

It is an amenable number.

115720237 is a deficient number, since it is larger than the sum of its proper divisors (3990383).

115720237 is an equidigital number, since it uses as much as digits as its factorization.

115720237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990382.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 115720237 is about 10757.3341028342. The cubic root of 115720237 is about 487.3075104179.

Adding to 115720237 its reverse (732027511), we get a palindrome (847747748).

The spelling of 115720237 in words is "one hundred fifteen million, seven hundred twenty thousand, two hundred thirty-seven".