118845257 has 4 divisors (see below), whose sum is σ = 119065476. Its totient is φ = 118625040.

The previous prime is 118845253. The next prime is 118845271. The reversal of 118845257 is 752548811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45981961 + 72863296 = 6781^2 + 8536^2 .

It is a cyclic number.

It is not a de Polignac number, because 118845257 - 2² = 118845253 is a prime.

It is a super-2 number, since 2×118845257² = 28248390222792098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118845253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109298 + ... + 110379.

It is an arithmetic number, because the mean of its divisors is an integer number (29766369).

Almost surely, 2^118845257 is an apocalyptic number.

It is an amenable number.

118845257 is a deficient number, since it is larger than the sum of its proper divisors (220219).

118845257 is an equidigital number, since it uses as much as digits as its factorization.

118845257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220218.

The product of its digits is 89600, while the sum is 41.

The square root of 118845257 is about 10901.6171736124. The cubic root of 118845257 is about 491.6551787159.

The spelling of 118845257 in words is "one hundred eighteen million, eight hundred forty-five thousand, two hundred fifty-seven".