137397503 has 8 divisors (see below), whose sum is σ = 140123520. Its totient is φ = 134691480.

The previous prime is 137397499. The next prime is 137397517. The reversal of 137397503 is 305793731.

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 137397503 - 2² = 137397499 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 (137397583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9278 + ... + 18996.

It is an arithmetic number, because the mean of its divisors is an integer number (17515440).

Almost surely, 2^137397503 is an apocalyptic number.

137397503 is a deficient number, since it is larger than the sum of its proper divisors (2726017).

137397503 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (137397502) it forms an eRAP, since the sums of their prime factors are consecutive (9996 and 9997).

137397503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9997.

The product of its (nonzero) digits is 59535, while the sum is 38.

The square root of 137397503 is about 11721.6680980140. The cubic root of 137397503 is about 516.0117766176.

The spelling of 137397503 in words is "one hundred thirty-seven million, three hundred ninety-seven thousand, five hundred three".