72541291 has 4 divisors (see below), whose sum is σ = 72580032. Its totient is φ = 72502552.

The previous prime is 72541289. The next prime is 72541303. The reversal of 72541291 is 19214527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19214527 = 41 ⋅468647.

It is a cyclic number.

It is not a de Polignac number, because 72541291 - 2¹ = 72541289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72541211) 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 3 ways as a sum of consecutive naturals, for example, 16411 + ... + 20356.

It is an arithmetic number, because the mean of its divisors is an integer number (18145008).

Almost surely, 2^72541291 is an apocalyptic number.

72541291 is a deficient number, since it is larger than the sum of its proper divisors (38741).

72541291 is a wasteful number, since it uses less digits than its factorization.

72541291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38740.

The product of its digits is 5040, while the sum is 31.

The square root of 72541291 is about 8517.1175288357. The cubic root of 72541291 is about 417.0566912978.

The spelling of 72541291 in words is "seventy-two million, five hundred forty-one thousand, two hundred ninety-one".