115257749 has 2 divisors, whose sum is σ = 115257750. Its totient is φ = 115257748.

The previous prime is 115257691. The next prime is 115257757. The reversal of 115257749 is 947752511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105062500 + 10195249 = 10250^2 + 3193^2 .

It is a cyclic number.

It is not a de Polignac number, because 115257749 - 2²⁴ = 98480533 is a prime.

It is equal to p_6586556 and since 115257749 and 6586556 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115257449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57628874 + 57628875.

It is an arithmetic number, because the mean of its divisors is an integer number (57628875).

Almost surely, 2^115257749 is an apocalyptic number.

It is an amenable number.

115257749 is a deficient number, since it is larger than the sum of its proper divisors (1).

115257749 is an equidigital number, since it uses as much as digits as its factorization.

115257749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 41.

The square root of 115257749 is about 10735.8161776364. The cubic root of 115257749 is about 486.6574518699.

The spelling of 115257749 in words is "one hundred fifteen million, two hundred fifty-seven thousand, seven hundred forty-nine".