137538487 has 4 divisors (see below), whose sum is σ = 137562480. Its totient is φ = 137514496.

The previous prime is 137538421. The next prime is 137538523. The reversal of 137538487 is 784835731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784835731 = 89 ⋅8818379.

It is a cyclic number.

It is not a de Polignac number, because 137538487 - 2¹¹ = 137536439 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 (137538787) 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, 2214 + ... + 16732.

It is an arithmetic number, because the mean of its divisors is an integer number (34390620).

Almost surely, 2^137538487 is an apocalyptic number.

137538487 is a deficient number, since it is larger than the sum of its proper divisors (23993).

137538487 is an equidigital number, since it uses as much as digits as its factorization.

137538487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23992.

The product of its digits is 564480, while the sum is 46.

The square root of 137538487 is about 11727.6803759311. The cubic root of 137538487 is about 516.1882100416.

The spelling of 137538487 in words is "one hundred thirty-seven million, five hundred thirty-eight thousand, four hundred eighty-seven".