72548109 has 16 divisors (see below), whose sum is σ = 107625600. Its totient is φ = 48299328.

The previous prime is 72548107. The next prime is 72548167. The reversal of 72548109 is 90184527.

72548109 is a `hidden beast` number, since 7 + 2 + 548 + 109 = 666.

It is not a de Polignac number, because 72548109 - 2¹ = 72548107 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72548107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25912 + ... + 28574.

It is an arithmetic number, because the mean of its divisors is an integer number (6726600).

Almost surely, 2^72548109 is an apocalyptic number.

It is an amenable number.

72548109 is a deficient number, since it is larger than the sum of its proper divisors (35077491).

72548109 is a wasteful number, since it uses less digits than its factorization.

72548109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681 (or 3675 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 72548109 is about 8517.5177722151. The cubic root of 72548109 is about 417.0697569757.

The spelling of 72548109 in words is "seventy-two million, five hundred forty-eight thousand, one hundred nine".