72231485 has 4 divisors (see below), whose sum is σ = 86677788. Its totient is φ = 57785184.

The previous prime is 72231473. The next prime is 72231493. The reversal of 72231485 is 58413227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58413227 = 5011 ⋅11657.

It can be written as a sum of positive squares in 2 ways, for example, as 45873529 + 26357956 = 6773^2 + 5134^2 .

It is a cyclic number.

It is not a de Polignac number, because 72231485 - 2²² = 68037181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 7223144 + ... + 7223153.

It is an arithmetic number, because the mean of its divisors is an integer number (21669447).

Almost surely, 2^72231485 is an apocalyptic number.

It is an amenable number.

72231485 is a deficient number, since it is larger than the sum of its proper divisors (14446303).

72231485 is a wasteful number, since it uses less digits than its factorization.

72231485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14446302.

The product of its digits is 13440, while the sum is 32.

The square root of 72231485 is about 8498.9108125689. The cubic root of 72231485 is about 416.4621285882.

The spelling of 72231485 in words is "seventy-two million, two hundred thirty-one thousand, four hundred eighty-five".