137689523 has 16 divisors (see below), whose sum is σ = 152244480. Its totient is φ = 123941664.

The previous prime is 137689499. The next prime is 137689529. The reversal of 137689523 is 325986731.

It is not a de Polignac number, because 137689523 - 2¹⁸ = 137427379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137689529) 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, 70265 + ... + 72197.

It is an arithmetic number, because the mean of its divisors is an integer number (9515280).

Almost surely, 2^137689523 is an apocalyptic number.

137689523 is a deficient number, since it is larger than the sum of its proper divisors (14554957).

137689523 is a wasteful number, since it uses less digits than its factorization.

137689523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138.

The product of its digits is 272160, while the sum is 44.

The square root of 137689523 is about 11734.1179046403. The cubic root of 137689523 is about 516.3770892506.

The spelling of 137689523 in words is "one hundred thirty-seven million, six hundred eighty-nine thousand, five hundred twenty-three".