72275923 has 2 divisors, whose sum is σ = 72275924. Its totient is φ = 72275922.

The previous prime is 72275909. The next prime is 72275933. The reversal of 72275923 is 32957227.

It is a strong prime.

It is an emirp because it is prime and its reverse (32957227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72275923 - 2²⁵ = 38721491 is a prime.

It is not a weakly prime, because it can be changed into another prime (72275933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36137961 + 36137962.

It is an arithmetic number, because the mean of its divisors is an integer number (36137962).

Almost surely, 2^72275923 is an apocalyptic number.

72275923 is a deficient number, since it is larger than the sum of its proper divisors (1).

72275923 is an equidigital number, since it uses as much as digits as its factorization.

72275923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 72275923 is about 8501.5247455971. The cubic root of 72275923 is about 416.5475158684.

The spelling of 72275923 in words is "seventy-two million, two hundred seventy-five thousand, nine hundred twenty-three".