118535257 has 2 divisors, whose sum is σ = 118535258. Its totient is φ = 118535256.

The previous prime is 118535251. The next prime is 118535279. The reversal of 118535257 is 752535811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109390681 + 9144576 = 10459^2 + 3024^2 .

It is an emirp because it is prime and its reverse (752535811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118535257 - 2¹⁹ = 118010969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118535251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59267628 + 59267629.

It is an arithmetic number, because the mean of its divisors is an integer number (59267629).

Almost surely, 2^118535257 is an apocalyptic number.

It is an amenable number.

118535257 is a deficient number, since it is larger than the sum of its proper divisors (1).

118535257 is an equidigital number, since it uses as much as digits as its factorization.

118535257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 37.

The square root of 118535257 is about 10887.3898157456. The cubic root of 118535257 is about 491.2273231401.

The spelling of 118535257 in words is "one hundred eighteen million, five hundred thirty-five thousand, two hundred fifty-seven".