72651851 has 2 divisors, whose sum is σ = 72651852. Its totient is φ = 72651850.

The previous prime is 72651841. The next prime is 72651883. The reversal of 72651851 is 15815627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72651851 - 2¹⁰ = 72650827 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72651841) 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, 36325925 + 36325926.

It is an arithmetic number, because the mean of its divisors is an integer number (36325926).

Almost surely, 2^72651851 is an apocalyptic number.

72651851 is a deficient number, since it is larger than the sum of its proper divisors (1).

72651851 is an equidigital number, since it uses as much as digits as its factorization.

72651851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 35.

The square root of 72651851 is about 8523.6055164467. The cubic root of 72651851 is about 417.2684621007.

The spelling of 72651851 in words is "seventy-two million, six hundred fifty-one thousand, eight hundred fifty-one".