72574491 has 16 divisors (see below), whose sum is σ = 105717888. Its totient is φ = 43920000.

The previous prime is 72574429. The next prime is 72574507. The reversal of 72574491 is 19447527.

It is not a de Polignac number, because 72574491 - 2¹⁰ = 72573467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72574891) by changing a digit.

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, 31116 + ... + 33366.

It is an arithmetic number, because the mean of its divisors is an integer number (6607368).

Almost surely, 2^72574491 is an apocalyptic number.

72574491 is a deficient number, since it is larger than the sum of its proper divisors (33143397).

72574491 is a wasteful number, since it uses less digits than its factorization.

72574491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242.

The product of its digits is 70560, while the sum is 39.

The square root of 72574491 is about 8519.0663220801. The cubic root of 72574491 is about 417.1203064249.

The spelling of 72574491 in words is "seventy-two million, five hundred seventy-four thousand, four hundred ninety-one".