72250841 has 4 divisors (see below), whose sum is σ = 77808612. Its totient is φ = 66693072.

The previous prime is 72250817. The next prime is 72250847. The reversal of 72250841 is 14805227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14805227 = 131 ⋅113017.

It can be written as a sum of positive squares in 2 ways, for example, as 10863616 + 61387225 = 3296^2 + 7835^2 .

It is a cyclic number.

It is not a de Polignac number, because 72250841 - 2⁶ = 72250777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72250847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778866 + ... + 2778891.

It is an arithmetic number, because the mean of its divisors is an integer number (19452153).

Almost surely, 2^72250841 is an apocalyptic number.

It is an amenable number.

72250841 is a deficient number, since it is larger than the sum of its proper divisors (5557771).

72250841 is a wasteful number, since it uses less digits than its factorization.

72250841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557770.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 72250841 is about 8500.0494704443. The cubic root of 72250841 is about 416.4993252993.

The spelling of 72250841 in words is "seventy-two million, two hundred fifty thousand, eight hundred forty-one".