72901522 has 16 divisors (see below), whose sum is σ = 114476544. Its totient is φ = 34776000.

The previous prime is 72901519. The next prime is 72901529. The reversal of 72901522 is 22510927.

It is not an unprimeable number, because it can be changed into a prime (72901529) by changing a digit.

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, 3879 + ... + 12682.

It is an arithmetic number, because the mean of its divisors is an integer number (7154784).

Almost surely, 2^72901522 is an apocalyptic number.

72901522 is a deficient number, since it is larger than the sum of its proper divisors (41575022).

72901522 is a wasteful number, since it uses less digits than its factorization.

72901522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16665.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 72901522 is about 8538.2388113709. The cubic root of 72901522 is about 417.7459022058.

The spelling of 72901522 in words is "seventy-two million, nine hundred one thousand, five hundred twenty-two".