137372503 has 4 divisors (see below), whose sum is σ = 138375360. Its totient is φ = 136369648.

The previous prime is 137372497. The next prime is 137372513. The reversal of 137372503 is 305273731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305273731 = 7 ⋅43610533.

It is a cyclic number.

It is not a de Polignac number, because 137372503 - 2¹⁷ = 137241431 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137372513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501223 + ... + 501496.

It is an arithmetic number, because the mean of its divisors is an integer number (34593840).

Almost surely, 2^137372503 is an apocalyptic number.

137372503 is a deficient number, since it is larger than the sum of its proper divisors (1002857).

137372503 is a wasteful number, since it uses less digits than its factorization.

137372503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002856.

The product of its (nonzero) digits is 13230, while the sum is 31.

The square root of 137372503 is about 11720.6016483797. The cubic root of 137372503 is about 515.9804779486.

The spelling of 137372503 in words is "one hundred thirty-seven million, three hundred seventy-two thousand, five hundred three".