72297503 has 8 divisors (see below), whose sum is σ = 73029600. Its totient is φ = 71568640.

The previous prime is 72297499. The next prime is 72297541. The reversal of 72297503 is 30579227.

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 72297503 - 2² = 72297499 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 (72297553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81623 + ... + 82503.

It is an arithmetic number, because the mean of its divisors is an integer number (9128700).

Almost surely, 2^72297503 is an apocalyptic number.

72297503 is a deficient number, since it is larger than the sum of its proper divisors (732097).

72297503 is a wasteful number, since it uses less digits than its factorization.

72297503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 72297503 is about 8502.7938349698. The cubic root of 72297503 is about 416.5889690501.

The spelling of 72297503 in words is "seventy-two million, two hundred ninety-seven thousand, five hundred three".