137357887 has 4 divisors (see below), whose sum is σ = 138232936. Its totient is φ = 136482840.

The previous prime is 137357881. The next prime is 137357893. The reversal of 137357887 is 788753731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (137357881) and next prime (137357893).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137357887 is a prime.

It is a super-2 number, since 2×137357887² = 37734378242209538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137357887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137357881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437289 + ... + 437602.

It is an arithmetic number, because the mean of its divisors is an integer number (34558234).

Almost surely, 2^137357887 is an apocalyptic number.

137357887 is a deficient number, since it is larger than the sum of its proper divisors (875049).

137357887 is an equidigital number, since it uses as much as digits as its factorization.

137357887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875048.

The product of its digits is 987840, while the sum is 49.

The square root of 137357887 is about 11719.9781143140. The cubic root of 137357887 is about 515.9621777357.

The spelling of 137357887 in words is "one hundred thirty-seven million, three hundred fifty-seven thousand, eight hundred eighty-seven".