72275797 has 4 divisors (see below), whose sum is σ = 78846336. Its totient is φ = 65705260.

The previous prime is 72275783. The next prime is 72275803. The reversal of 72275797 is 79757227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72275797 - 2⁷ = 72275669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72275747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285253 + ... + 3285274.

It is an arithmetic number, because the mean of its divisors is an integer number (19711584).

Almost surely, 2^72275797 is an apocalyptic number.

It is an amenable number.

72275797 is a deficient number, since it is larger than the sum of its proper divisors (6570539).

72275797 is a wasteful number, since it uses less digits than its factorization.

72275797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570538.

The product of its digits is 432180, while the sum is 46.

The square root of 72275797 is about 8501.5173351585. The cubic root of 72275797 is about 416.5472738099.

The spelling of 72275797 in words is "seventy-two million, two hundred seventy-five thousand, seven hundred ninety-seven".