115637729 has 2 divisors, whose sum is σ = 115637730. Its totient is φ = 115637728.

The previous prime is 115637653. The next prime is 115637741. The reversal of 115637729 is 927736511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109160704 + 6477025 = 10448^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 115637729 - 2¹² = 115633633 is a prime.

It is not a weakly prime, because it can be changed into another prime (115637129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57818864 + 57818865.

It is an arithmetic number, because the mean of its divisors is an integer number (57818865).

Almost surely, 2^115637729 is an apocalyptic number.

It is an amenable number.

115637729 is a deficient number, since it is larger than the sum of its proper divisors (1).

115637729 is an equidigital number, since it uses as much as digits as its factorization.

115637729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 41.

The square root of 115637729 is about 10753.4984539916. The cubic root of 115637729 is about 487.1916668724.

The spelling of 115637729 in words is "one hundred fifteen million, six hundred thirty-seven thousand, seven hundred twenty-nine".