72472003 has 4 divisors (see below), whose sum is σ = 76735080. Its totient is φ = 68208928.

The previous prime is 72471923. The next prime is 72472013. The reversal of 72472003 is 30027427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30027427 = 131 ⋅229217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72472003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72472013) 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 3 ways as a sum of consecutive naturals, for example, 2131513 + ... + 2131546.

It is an arithmetic number, because the mean of its divisors is an integer number (19183770).

Almost surely, 2^72472003 is an apocalyptic number.

72472003 is a deficient number, since it is larger than the sum of its proper divisors (4263077).

72472003 is a wasteful number, since it uses less digits than its factorization.

72472003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263076.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 72472003 is about 8513.0489837660. The cubic root of 72472003 is about 416.9238647431.

It can be divided in two parts, 724 and 72003, that added together give a palindrome (72727).

The spelling of 72472003 in words is "seventy-two million, four hundred seventy-two thousand, three".