137988287 has 8 divisors (see below), whose sum is σ = 142912512. Its totient is φ = 133147000.

The previous prime is 137988251. The next prime is 137988307. The reversal of 137988287 is 782889731.

137988287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137988287 - 2¹⁴ = 137971903 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 (137988217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17339 + ... + 24012.

It is an arithmetic number, because the mean of its divisors is an integer number (17864064).

Almost surely, 2^137988287 is an apocalyptic number.

137988287 is a deficient number, since it is larger than the sum of its proper divisors (4924225).

137988287 is an equidigital number, since it uses as much as digits as its factorization.

137988287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41469.

The product of its digits is 1354752, while the sum is 53.

The square root of 137988287 is about 11746.8415755045. The cubic root of 137988287 is about 516.7503043696.

The spelling of 137988287 in words is "one hundred thirty-seven million, nine hundred eighty-eight thousand, two hundred eighty-seven".