72244871 has 2 divisors, whose sum is σ = 72244872. Its totient is φ = 72244870.

The previous prime is 72244867. The next prime is 72244877. The reversal of 72244871 is 17844227.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (17844227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72244871 - 2² = 72244867 is a prime.

It is a Sophie Germain 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 (72244877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36122435 + 36122436.

It is an arithmetic number, because the mean of its divisors is an integer number (36122436).

Almost surely, 2^72244871 is an apocalyptic number.

72244871 is a deficient number, since it is larger than the sum of its proper divisors (1).

72244871 is an equidigital number, since it uses as much as digits as its factorization.

72244871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25088, while the sum is 35.

The square root of 72244871 is about 8499.6982887630. The cubic root of 72244871 is about 416.4878533707.

The spelling of 72244871 in words is "seventy-two million, two hundred forty-four thousand, eight hundred seventy-one".