72339101 has 2 divisors, whose sum is σ = 72339102. Its totient is φ = 72339100.

The previous prime is 72339077. The next prime is 72339103. The reversal of 72339101 is 10193327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39000025 + 33339076 = 6245^2 + 5774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72339101 is a prime.

Together with 72339103, 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 (72339103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36169550 + 36169551.

It is an arithmetic number, because the mean of its divisors is an integer number (36169551).

Almost surely, 2^72339101 is an apocalyptic number.

It is an amenable number.

72339101 is a deficient number, since it is larger than the sum of its proper divisors (1).

72339101 is an equidigital number, since it uses as much as digits as its factorization.

72339101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 72339101 is about 8505.2396203752. The cubic root of 72339101 is about 416.6688516863.

The spelling of 72339101 in words is "seventy-two million, three hundred thirty-nine thousand, one hundred one".