72271559 has 2 divisors, whose sum is σ = 72271560. Its totient is φ = 72271558.

The previous prime is 72271553. The next prime is 72271613. The reversal of 72271559 is 95517227.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72271559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72271553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36135779 + 36135780.

It is an arithmetic number, because the mean of its divisors is an integer number (36135780).

Almost surely, 2^72271559 is an apocalyptic number.

72271559 is a deficient number, since it is larger than the sum of its proper divisors (1).

72271559 is an equidigital number, since it uses as much as digits as its factorization.

72271559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 38.

The square root of 72271559 is about 8501.2680818805. The cubic root of 72271559 is about 416.5391320256.

The spelling of 72271559 in words is "seventy-two million, two hundred seventy-one thousand, five hundred fifty-nine".