47722013 has 2 divisors, whose sum is σ = 47722014. Its totient is φ = 47722012.

The previous prime is 47722001. The next prime is 47722021. The reversal of 47722013 is 31022774.

47722013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38217124 + 9504889 = 6182^2 + 3083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47722013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47722093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23861006 + 23861007.

It is an arithmetic number, because the mean of its divisors is an integer number (23861007).

Almost surely, 2^47722013 is an apocalyptic number.

It is an amenable number.

47722013 is a deficient number, since it is larger than the sum of its proper divisors (1).

47722013 is an equidigital number, since it uses as much as digits as its factorization.

47722013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 47722013 is about 6908.1121154770. The cubic root of 47722013 is about 362.7211821786.

Adding to 47722013 its reverse (31022774), we get a palindrome (78744787).

The spelling of 47722013 in words is "forty-seven million, seven hundred twenty-two thousand, thirteen".