72212554 has 8 divisors (see below), whose sum is σ = 108500868. Its totient is φ = 36045600.

The previous prime is 72212551. The next prime is 72212587. The reversal of 72212554 is 45521227.

It can be written as a sum of positive squares in 2 ways, for example, as 70946929 + 1265625 = 8423^2 + 1125^2 .

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 (72212551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28837 + ... + 31240.

Almost surely, 2^72212554 is an apocalyptic number.

72212554 is a deficient number, since it is larger than the sum of its proper divisors (36288314).

72212554 is a wasteful number, since it uses less digits than its factorization.

72212554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60680.

The product of its digits is 5600, while the sum is 28.

The square root of 72212554 is about 8497.7970086370. The cubic root of 72212554 is about 416.4257421776.

The spelling of 72212554 in words is "seventy-two million, two hundred twelve thousand, five hundred fifty-four".