72561119 has 2 divisors, whose sum is σ = 72561120. Its totient is φ = 72561118.

The previous prime is 72561109. The next prime is 72561121. The reversal of 72561119 is 91116527.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72561119 is a prime.

It is a super-2 number, since 2×72561119² = 10530231981064322, which contains 22 as substring.

Together with 72561121, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72561109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36280559 + 36280560.

It is an arithmetic number, because the mean of its divisors is an integer number (36280560).

Almost surely, 2^72561119 is an apocalyptic number.

72561119 is a deficient number, since it is larger than the sum of its proper divisors (1).

72561119 is an equidigital number, since it uses as much as digits as its factorization.

72561119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 32.

The square root of 72561119 is about 8518.2814581346. The cubic root of 72561119 is about 417.0946864250.

The spelling of 72561119 in words is "seventy-two million, five hundred sixty-one thousand, one hundred nineteen".