137491375 has 16 divisors (see below), whose sum is σ = 196103232. Its totient is φ = 94279200.

The previous prime is 137491373. The next prime is 137491399. The reversal of 137491375 is 573194731.

It is not a de Polignac number, because 137491375 - 2¹ = 137491373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137491373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77692 + ... + 79441.

It is an arithmetic number, because the mean of its divisors is an integer number (12256452).

Almost surely, 2^137491375 is an apocalyptic number.

137491375 is a deficient number, since it is larger than the sum of its proper divisors (58611857).

137491375 is an equidigital number, since it uses as much as digits as its factorization.

137491375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157155 (or 157145 counting only the distinct ones).

The product of its digits is 79380, while the sum is 40.

The square root of 137491375 is about 11725.6716225554. The cubic root of 137491375 is about 516.1292654831.

The spelling of 137491375 in words is "one hundred thirty-seven million, four hundred ninety-one thousand, three hundred seventy-five".