72592109 has 2 divisors, whose sum is σ = 72592110. Its totient is φ = 72592108.

The previous prime is 72592097. The next prime is 72592123. The reversal of 72592109 is 90129527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 33028009 = 6290^2 + 5747^2 .

It is an emirp because it is prime and its reverse (90129527) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72592109 is a prime.

It is a super-2 number, since 2×72592109² = 10539228578135762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72592129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36296054 + 36296055.

It is an arithmetic number, because the mean of its divisors is an integer number (36296055).

Almost surely, 2^72592109 is an apocalyptic number.

It is an amenable number.

72592109 is a deficient number, since it is larger than the sum of its proper divisors (1).

72592109 is an equidigital number, since it uses as much as digits as its factorization.

72592109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 72592109 is about 8520.1002928369. The cubic root of 72592109 is about 417.1540567177.

The spelling of 72592109 in words is "seventy-two million, five hundred ninety-two thousand, one hundred nine".