72572554 has 8 divisors (see below), whose sum is σ = 110643588. Its totient is φ = 35691360.

The previous prime is 72572543. The next prime is 72572557. The reversal of 72572554 is 45527527.

It can be written as a sum of positive squares in 2 ways, for example, as 70946929 + 1625625 = 8423^2 + 1275^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72572557) 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, 297307 + ... + 297550.

Almost surely, 2^72572554 is an apocalyptic number.

72572554 is a deficient number, since it is larger than the sum of its proper divisors (38071034).

72572554 is a wasteful number, since it uses less digits than its factorization.

72572554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594920.

The product of its digits is 98000, while the sum is 37.

The square root of 72572554 is about 8518.9526351542. The cubic root of 72572554 is about 417.1165954367.

The spelling of 72572554 in words is "seventy-two million, five hundred seventy-two thousand, five hundred fifty-four".