72241601 has 2 divisors, whose sum is σ = 72241602. Its totient is φ = 72241600.

The previous prime is 72241541. The next prime is 72241613. The reversal of 72241601 is 10614227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68145025 + 4096576 = 8255^2 + 2024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72241601 is a prime.

It is not a weakly prime, because it can be changed into another prime (72241661) 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 as a sum of consecutive naturals, namely, 36120800 + 36120801.

It is an arithmetic number, because the mean of its divisors is an integer number (36120801).

Almost surely, 2^72241601 is an apocalyptic number.

It is an amenable number.

72241601 is a deficient number, since it is larger than the sum of its proper divisors (1).

72241601 is an equidigital number, since it uses as much as digits as its factorization.

72241601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 72241601 is about 8499.5059268172. The cubic root of 72241601 is about 416.4815694836.

Adding to 72241601 its reverse (10614227), we get a palindrome (82855828).

The spelling of 72241601 in words is "seventy-two million, two hundred forty-one thousand, six hundred one".