135137503 has 4 divisors (see below), whose sum is σ = 135162720. Its totient is φ = 135112288.

The previous prime is 135137473. The next prime is 135137507. The reversal of 135137503 is 305731531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135137503 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 (135137507) 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, 1018 + ... + 16471.

It is an arithmetic number, because the mean of its divisors is an integer number (33790680).

Almost surely, 2^135137503 is an apocalyptic number.

135137503 is a deficient number, since it is larger than the sum of its proper divisors (25217).

135137503 is an equidigital number, since it uses as much as digits as its factorization.

135137503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25216.

The product of its (nonzero) digits is 4725, while the sum is 28.

The square root of 135137503 is about 11624.8657196546. The cubic root of 135137503 is about 513.1668929208.

The spelling of 135137503 in words is "one hundred thirty-five million, one hundred thirty-seven thousand, five hundred three".