115538977 has 2 divisors, whose sum is σ = 115538978. Its totient is φ = 115538976.

The previous prime is 115538971. The next prime is 115538989. The reversal of 115538977 is 779835511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89283601 + 26255376 = 9449^2 + 5124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115538977 is a prime.

It is not a weakly prime, because it can be changed into another prime (115538971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57769488 + 57769489.

It is an arithmetic number, because the mean of its divisors is an integer number (57769489).

Almost surely, 2^115538977 is an apocalyptic number.

It is an amenable number.

115538977 is a deficient number, since it is larger than the sum of its proper divisors (1).

115538977 is an equidigital number, since it uses as much as digits as its factorization.

115538977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 46.

The square root of 115538977 is about 10748.9058512948. The cubic root of 115538977 is about 487.0529438285.

The spelling of 115538977 in words is "one hundred fifteen million, five hundred thirty-eight thousand, nine hundred seventy-seven".