137500115 has 4 divisors (see below), whose sum is σ = 165000144. Its totient is φ = 110000088.

The previous prime is 137500037. The next prime is 137500123. The reversal of 137500115 is 511005731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511005731 = 1697 ⋅301123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137500115 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13750007 + ... + 13750016.

It is an arithmetic number, because the mean of its divisors is an integer number (41250036).

Almost surely, 2^137500115 is an apocalyptic number.

137500115 is a deficient number, since it is larger than the sum of its proper divisors (27500029).

137500115 is an equidigital number, since it uses as much as digits as its factorization.

137500115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27500028.

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 137500115 is about 11726.0443031740. The cubic root of 137500115 is about 516.1402016217.

Adding to 137500115 its reverse (511005731), we get a palindrome (648505846).

The spelling of 137500115 in words is "one hundred thirty-seven million, five hundred thousand, one hundred fifteen".