72254522 has 16 divisors (see below), whose sum is σ = 115217640. Its totient is φ = 33865728.

The previous prime is 72254519. The next prime is 72254543. The reversal of 72254522 is 22545227.

It can be written as a sum of positive squares in 4 ways, for example, as 64464841 + 7789681 = 8029^2 + 2791^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4604 + ... + 12872.

Almost surely, 2^72254522 is an apocalyptic number.

72254522 is a deficient number, since it is larger than the sum of its proper divisors (42963118).

72254522 is a wasteful number, since it uses less digits than its factorization.

72254522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545.

The product of its digits is 11200, while the sum is 29.

The square root of 72254522 is about 8500.2659958380. The cubic root of 72254522 is about 416.5063983795.

Adding to 72254522 its reverse (22545227), we get a palindrome (94799749).

The spelling of 72254522 in words is "seventy-two million, two hundred fifty-four thousand, five hundred twenty-two".