72219593 has 2 divisors, whose sum is σ = 72219594. Its totient is φ = 72219592.

The previous prime is 72219577. The next prime is 72219607. The reversal of 72219593 is 39591227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37797904 + 34421689 = 6148^2 + 5867^2 .

It is a cyclic number.

It is not a de Polignac number, because 72219593 - 2⁴ = 72219577 is a prime.

It is a super-2 number, since 2×72219593² = 10431339226171298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72219503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36109796 + 36109797.

It is an arithmetic number, because the mean of its divisors is an integer number (36109797).

Almost surely, 2^72219593 is an apocalyptic number.

It is an amenable number.

72219593 is a deficient number, since it is larger than the sum of its proper divisors (1).

72219593 is an equidigital number, since it uses as much as digits as its factorization.

72219593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 38.

The square root of 72219593 is about 8498.2111647099. The cubic root of 72219593 is about 416.4392722606.

The spelling of 72219593 in words is "seventy-two million, two hundred nineteen thousand, five hundred ninety-three".