118537 has 4 divisors (see below), whose sum is σ = 119700. Its totient is φ = 117376.

The previous prime is 118529. The next prime is 118543. The reversal of 118537 is 735811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 735811 = 17 ⋅43283.

It can be written as a sum of positive squares in 2 ways, for example, as 48841 + 69696 = 221^2 + 264^2 .

It is a cyclic number.

It is not a de Polignac number, because 118537 - 2³ = 118529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118037) 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, 412 + ... + 637.

It is an arithmetic number, because the mean of its divisors is an integer number (29925).

2¹¹⁸⁵³⁷ is an apocalyptic number.

It is an amenable number.

118537 is a deficient number, since it is larger than the sum of its proper divisors (1163).

118537 is a wasteful number, since it uses less digits than its factorization.

118537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162.

The product of its digits is 840, while the sum is 25.

The square root of 118537 is about 344.2920272095. The cubic root of 118537 is about 49.1229730877.

The spelling of 118537 in words is "one hundred eighteen thousand, five hundred thirty-seven".