72351787 has 2 divisors, whose sum is σ = 72351788. Its totient is φ = 72351786.

The previous prime is 72351733. The next prime is 72351793. The reversal of 72351787 is 78715327.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72351787 is a prime.

It is not a weakly prime, because it can be changed into another prime (72351707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36175893 + 36175894.

It is an arithmetic number, because the mean of its divisors is an integer number (36175894).

Almost surely, 2^72351787 is an apocalyptic number.

72351787 is a deficient number, since it is larger than the sum of its proper divisors (1).

72351787 is an equidigital number, since it uses as much as digits as its factorization.

72351787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The square root of 72351787 is about 8505.9853632604. The cubic root of 72351787 is about 416.6932071272.

The spelling of 72351787 in words is "seventy-two million, three hundred fifty-one thousand, seven hundred eighty-seven".