115560421 has 2 divisors, whose sum is σ = 115560422. Its totient is φ = 115560420.

The previous prime is 115560371. The next prime is 115560433. The reversal of 115560421 is 124065511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82555396 + 33005025 = 9086^2 + 5745^2 .

It is a cyclic number.

It is not a de Polignac number, because 115560421 - 2⁷ = 115560293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115560481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57780210 + 57780211.

It is an arithmetic number, because the mean of its divisors is an integer number (57780211).

Almost surely, 2^115560421 is an apocalyptic number.

It is an amenable number.

115560421 is a deficient number, since it is larger than the sum of its proper divisors (1).

115560421 is an equidigital number, since it uses as much as digits as its factorization.

115560421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 115560421 is about 10749.9033018907. The cubic root of 115560421 is about 487.0830742587.

It can be divided in two parts, 1155604 and 21, that added together give a square (1155625 = 1075²).

The spelling of 115560421 in words is "one hundred fifteen million, five hundred sixty thousand, four hundred twenty-one".