72275603 has 4 divisors (see below), whose sum is σ = 72300480. Its totient is φ = 72250728.

The previous prime is 72275587. The next prime is 72275629. The reversal of 72275603 is 30657227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30657227 = 337 ⋅90971.

It is a cyclic number.

It is not a de Polignac number, because 72275603 - 2⁴ = 72275587 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 72275603.

It is not an unprimeable number, because it can be changed into a prime (72275633) 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, 7400 + ... + 14117.

It is an arithmetic number, because the mean of its divisors is an integer number (18075120).

Almost surely, 2^72275603 is an apocalyptic number.

72275603 is a deficient number, since it is larger than the sum of its proper divisors (24877).

72275603 is a wasteful number, since it uses less digits than its factorization.

72275603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24876.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 72275603 is about 8501.5059254229. The cubic root of 72275603 is about 416.5469011160.

The spelling of 72275603 in words is "seventy-two million, two hundred seventy-five thousand, six hundred three".