72244501 has 16 divisors (see below), whose sum is σ = 85051008. Its totient is φ = 60076800.

The previous prime is 72244493. The next prime is 72244507. The reversal of 72244501 is 10544227.

It is not a de Polignac number, because 72244501 - 2³ = 72244493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72244507) 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, 59961 + ... + 61153.

It is an arithmetic number, because the mean of its divisors is an integer number (5315688).

Almost surely, 2^72244501 is an apocalyptic number.

It is an amenable number.

72244501 is a deficient number, since it is larger than the sum of its proper divisors (12806507).

72244501 is a wasteful number, since it uses less digits than its factorization.

72244501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 72244501 is about 8499.6765232566. The cubic root of 72244501 is about 416.4871423593.

Adding to 72244501 its reverse (10544227), we get a palindrome (82788728).

The spelling of 72244501 in words is "seventy-two million, two hundred forty-four thousand, five hundred one".