72531112 has 16 divisors (see below), whose sum is σ = 143995860. Its totient is φ = 34132224.

The previous prime is 72531101. The next prime is 72531131. The reversal of 72531112 is 21113527.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59814756 + 12716356 = 7734^2 + 3566^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266523 + ... + 266794.

Almost surely, 2^72531112 is an apocalyptic number.

It is an amenable number.

72531112 is a deficient number, since it is larger than the sum of its proper divisors (71464748).

72531112 is a wasteful number, since it uses less digits than its factorization.

72531112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533340 (or 533336 counting only the distinct ones).

The product of its digits is 420, while the sum is 22.

The square root of 72531112 is about 8516.5199465509. The cubic root of 72531112 is about 417.0371832420.

Adding to 72531112 its reverse (21113527), we get a palindrome (93644639).

The spelling of 72531112 in words is "seventy-two million, five hundred thirty-one thousand, one hundred twelve".