137500173 has 10 divisors (see below), whose sum is σ = 205401614. Its totient is φ = 91666728.

The previous prime is 137500171. The next prime is 137500189. The reversal of 137500173 is 371005731.

It can be written as a sum of positive squares in only one way, i.e., 106564329 + 30935844 = 10323^2 + 5562^2 .

It is not a de Polignac number, because 137500173 - 2¹ = 137500171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137500171) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 848686 + ... + 848847.

Almost surely, 2^137500173 is an apocalyptic number.

It is an amenable number.

137500173 is a deficient number, since it is larger than the sum of its proper divisors (67901441).

137500173 is an equidigital number, since it uses as much as digits as its factorization.

137500173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697545 (or 1697536 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 27.

The square root of 137500173 is about 11726.0467763010. The cubic root of 137500173 is about 516.1402741941.

The spelling of 137500173 in words is "one hundred thirty-seven million, five hundred thousand, one hundred seventy-three".