72140801 has 2 divisors, whose sum is σ = 72140802. Its totient is φ = 72140800.

The previous prime is 72140773. The next prime is 72140821. The reversal of 72140801 is 10804127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64384576 + 7756225 = 8024^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 72140801 - 2¹⁰ = 72139777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72140821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36070400 + 36070401.

It is an arithmetic number, because the mean of its divisors is an integer number (36070401).

Almost surely, 2^72140801 is an apocalyptic number.

It is an amenable number.

72140801 is a deficient number, since it is larger than the sum of its proper divisors (1).

72140801 is an equidigital number, since it uses as much as digits as its factorization.

72140801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 72140801 is about 8493.5741004597. The cubic root of 72140801 is about 416.2877712541.

Adding to 72140801 its reverse (10804127), we get a palindrome (82944928).

The spelling of 72140801 in words is "seventy-two million, one hundred forty thousand, eight hundred one".