72054217 has 2 divisors, whose sum is σ = 72054218. Its totient is φ = 72054216.

The previous prime is 72054161. The next prime is 72054253. The reversal of 72054217 is 71245027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58430736 + 13623481 = 7644^2 + 3691^2 .

It is a cyclic number.

It is not a de Polignac number, because 72054217 - 2¹⁹ = 71529929 is a prime.

It is not a weakly prime, because it can be changed into another prime (72054277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36027108 + 36027109.

It is an arithmetic number, because the mean of its divisors is an integer number (36027109).

Almost surely, 2^72054217 is an apocalyptic number.

It is an amenable number.

72054217 is a deficient number, since it is larger than the sum of its proper divisors (1).

72054217 is an equidigital number, since it uses as much as digits as its factorization.

72054217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 72054217 is about 8488.4755404018. The cubic root of 72054217 is about 416.1211605448.

The spelling of 72054217 in words is "seventy-two million, fifty-four thousand, two hundred seventeen".