72331151 has 2 divisors, whose sum is σ = 72331152. Its totient is φ = 72331150.

The previous prime is 72331139. The next prime is 72331169. The reversal of 72331151 is 15113327.

It is a weak prime.

It is an emirp because it is prime and its reverse (15113327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72331151 - 2¹⁰ = 72330127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72331951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36165575 + 36165576.

It is an arithmetic number, because the mean of its divisors is an integer number (36165576).

Almost surely, 2^72331151 is an apocalyptic number.

72331151 is a deficient number, since it is larger than the sum of its proper divisors (1).

72331151 is an equidigital number, since it uses as much as digits as its factorization.

72331151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630, while the sum is 23.

The square root of 72331151 is about 8504.7722485673. The cubic root of 72331151 is about 416.6535872872.

Adding to 72331151 its reverse (15113327), we get a palindrome (87444478).

The spelling of 72331151 in words is "seventy-two million, three hundred thirty-one thousand, one hundred fifty-one".