72022301 has 4 divisors (see below), whose sum is σ = 77562492. Its totient is φ = 66482112.

The previous prime is 72022289. The next prime is 72022339. The reversal of 72022301 is 10322027.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4618201 + 67404100 = 2149^2 + 8210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72022301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72022301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72022351) 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, 2770076 + ... + 2770101.

It is an arithmetic number, because the mean of its divisors is an integer number (19390623).

Almost surely, 2^72022301 is an apocalyptic number.

It is an amenable number.

72022301 is a deficient number, since it is larger than the sum of its proper divisors (5540191).

72022301 is a wasteful number, since it uses less digits than its factorization.

72022301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540190.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 72022301 is about 8486.5953715256. The cubic root of 72022301 is about 416.0597119815.

Adding to 72022301 its reverse (10322027), we get a palindrome (82344328).

The spelling of 72022301 in words is "seventy-two million, twenty-two thousand, three hundred one".