72520503 has 36 divisors (see below), whose sum is σ = 111289080. Its totient is φ = 41924960.

The previous prime is 72520477. The next prime is 72520507. The reversal of 72520503 is 30502527.

It is not a de Polignac number, because 72520503 - 2⁵ = 72520471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72520507) 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 35 ways as a sum of consecutive naturals, for example, 873700 + ... + 873782.

Almost surely, 2^72520503 is an apocalyptic number.

72520503 is a deficient number, since it is larger than the sum of its proper divisors (38768577).

72520503 is a wasteful number, since it uses less digits than its factorization.

72520503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 72520503 is about 8515.8970754701. The cubic root of 72520503 is about 417.0168491487.

The spelling of 72520503 in words is "seventy-two million, five hundred twenty thousand, five hundred three".