115245421 has 2 divisors, whose sum is σ = 115245422. Its totient is φ = 115245420.

The previous prime is 115245407. The next prime is 115245451. The reversal of 115245421 is 124542511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114789796 + 455625 = 10714^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 115245421 - 2¹³ = 115237229 is a prime.

It is a super-2 number, since 2×115245421² = 26563014122934482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115245451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57622710 + 57622711.

It is an arithmetic number, because the mean of its divisors is an integer number (57622711).

Almost surely, 2^115245421 is an apocalyptic number.

It is an amenable number.

115245421 is a deficient number, since it is larger than the sum of its proper divisors (1).

115245421 is an equidigital number, since it uses as much as digits as its factorization.

115245421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 25.

The square root of 115245421 is about 10735.2420093820. The cubic root of 115245421 is about 486.6401002470.

Adding to 115245421 its reverse (124542511), we get a palindrome (239787932).

The spelling of 115245421 in words is "one hundred fifteen million, two hundred forty-five thousand, four hundred twenty-one".