136137503 has 4 divisors (see below), whose sum is σ = 136350528. Its totient is φ = 135924480.

The previous prime is 136137499. The next prime is 136137509. The reversal of 136137503 is 305731631.

It is a happy number.

136137503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305731631 = 271 ⋅1128161.

It is a cyclic number.

It is not a de Polignac number, because 136137503 - 2² = 136137499 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 (136137509) 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, 105551 + ... + 106832.

It is an arithmetic number, because the mean of its divisors is an integer number (34087632).

Almost surely, 2^136137503 is an apocalyptic number.

136137503 is a deficient number, since it is larger than the sum of its proper divisors (213025).

136137503 is an equidigital number, since it uses as much as digits as its factorization.

136137503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213024.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 136137503 is about 11667.7976927953. The cubic root of 136137503 is about 514.4295729571.

The spelling of 136137503 in words is "one hundred thirty-six million, one hundred thirty-seven thousand, five hundred three".