72524241 has 10 divisors (see below), whose sum is σ = 108338802. Its totient is φ = 48349440.

The previous prime is 72524237. The next prime is 72524251. The reversal of 72524241 is 14242527.

It can be written as a sum of positive squares in only one way, i.e., 72182016 + 342225 = 8496^2 + 585^2 .

It is not a de Polignac number, because 72524241 - 2² = 72524237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (72524201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 447600 + ... + 447761.

Almost surely, 2^72524241 is an apocalyptic number.

It is an amenable number.

72524241 is a deficient number, since it is larger than the sum of its proper divisors (35814561).

72524241 is an equidigital number, since it uses as much as digits as its factorization.

72524241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895373 (or 895364 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 72524241 is about 8516.1165445290. The cubic root of 72524241 is about 417.0240139372.

Adding to 72524241 its reverse (14242527), we get a palindrome (86766768).

The spelling of 72524241 in words is "seventy-two million, five hundred twenty-four thousand, two hundred forty-one".