72561202 has 16 divisors (see below), whose sum is σ = 131708160. Its totient is φ = 29268288.

The previous prime is 72561199. The next prime is 72561221. The reversal of 72561202 is 20216527.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152202 + ... + 152677.

It is an arithmetic number, because the mean of its divisors is an integer number (8231760).

Almost surely, 2^72561202 is an apocalyptic number.

72561202 is a deficient number, since it is larger than the sum of its proper divisors (59146958).

72561202 is a wasteful number, since it uses less digits than its factorization.

72561202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304905.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 72561202 is about 8518.2863300079. The cubic root of 72561202 is about 417.0948454581.

Adding to 72561202 its reverse (20216527), we get a palindrome (92777729).

The spelling of 72561202 in words is "seventy-two million, five hundred sixty-one thousand, two hundred two".