115451261 has 2 divisors, whose sum is σ = 115451262. Its totient is φ = 115451260.

The previous prime is 115451221. The next prime is 115451269. The reversal of 115451261 is 162154511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72352036 + 43099225 = 8506^2 + 6565^2 .

It is a cyclic number.

It is not a de Polignac number, because 115451261 - 2⁶ = 115451197 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 115451261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115451269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57725630 + 57725631.

It is an arithmetic number, because the mean of its divisors is an integer number (57725631).

Almost surely, 2^115451261 is an apocalyptic number.

It is an amenable number.

115451261 is a deficient number, since it is larger than the sum of its proper divisors (1).

115451261 is an equidigital number, since it uses as much as digits as its factorization.

115451261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 26.

The square root of 115451261 is about 10744.8248473393. The cubic root of 115451261 is about 486.9296574330.

The spelling of 115451261 in words is "one hundred fifteen million, four hundred fifty-one thousand, two hundred sixty-one".