118897505 has 8 divisors (see below), whose sum is σ = 143719272. Its totient is φ = 94423168.

The previous prime is 118897501. The next prime is 118897529. The reversal of 118897505 is 505798811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 289 + 118897216 = 17^2 + 10904^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118897505 - 2² = 118897501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118897501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86102 + ... + 87471.

It is an arithmetic number, because the mean of its divisors is an integer number (17964909).

Almost surely, 2^118897505 is an apocalyptic number.

It is an amenable number.

118897505 is a deficient number, since it is larger than the sum of its proper divisors (24821767).

118897505 is a wasteful number, since it uses less digits than its factorization.

118897505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173715.

The product of its (nonzero) digits is 100800, while the sum is 44.

The square root of 118897505 is about 10904.0132520096. The cubic root of 118897505 is about 491.7272170312.

The spelling of 118897505 in words is "one hundred eighteen million, eight hundred ninety-seven thousand, five hundred five".