72362521 has 8 divisors (see below), whose sum is σ = 90218304. Its totient is φ = 56386320.

The previous prime is 72362519. The next prime is 72362539. The reversal of 72362521 is 12526327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72362521 - 2¹ = 72362519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72362521.

It is not an unprimeable number, because it can be changed into a prime (72362501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469810 + ... + 469963.

It is an arithmetic number, because the mean of its divisors is an integer number (11277288).

Almost surely, 2^72362521 is an apocalyptic number.

It is an amenable number.

72362521 is a deficient number, since it is larger than the sum of its proper divisors (17855783).

72362521 is a wasteful number, since it uses less digits than its factorization.

72362521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939791.

The product of its digits is 5040, while the sum is 28.

The square root of 72362521 is about 8506.6163073222. The cubic root of 72362521 is about 416.7138127630.

Adding to 72362521 its reverse (12526327), we get a palindrome (84888848).

The spelling of 72362521 in words is "seventy-two million, three hundred sixty-two thousand, five hundred twenty-one".