72249503 has 16 divisors (see below), whose sum is σ = 76640256. Its totient is φ = 68026560.

The previous prime is 72249479. The next prime is 72249511. The reversal of 72249503 is 30594227.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 72249503 - 2¹⁶ = 72183967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72249503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72249523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188450 + ... + 188832.

It is an arithmetic number, because the mean of its divisors is an integer number (4790016).

Almost surely, 2^72249503 is an apocalyptic number.

72249503 is a deficient number, since it is larger than the sum of its proper divisors (4390753).

72249503 is a wasteful number, since it uses less digits than its factorization.

72249503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 72249503 is about 8499.9707646556. The cubic root of 72249503 is about 416.4967542587.

The spelling of 72249503 in words is "seventy-two million, two hundred forty-nine thousand, five hundred three".