72537905 has 16 divisors (see below), whose sum is σ = 95256000. Its totient is φ = 52589760.

The previous prime is 72537893. The next prime is 72537911. The reversal of 72537905 is 50973527.

It is not a de Polignac number, because 72537905 - 2⁶ = 72537841 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17306 + ... + 21084.

It is an arithmetic number, because the mean of its divisors is an integer number (5953500).

Almost surely, 2^72537905 is an apocalyptic number.

It is an amenable number.

72537905 is a deficient number, since it is larger than the sum of its proper divisors (22718095).

72537905 is a wasteful number, since it uses less digits than its factorization.

72537905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144.

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 72537905 is about 8516.9187503463. The cubic root of 72537905 is about 417.0502022306.

The spelling of 72537905 in words is "seventy-two million, five hundred thirty-seven thousand, nine hundred five".