47782013 has 2 divisors, whose sum is σ = 47782014. Its totient is φ = 47782012.

The previous prime is 47781961. The next prime is 47782051. The reversal of 47782013 is 31028774.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39476089 + 8305924 = 6283^2 + 2882^2 .

It is a cyclic number.

It is not a de Polignac number, because 47782013 - 2⁶ = 47781949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47782213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23891006 + 23891007.

It is an arithmetic number, because the mean of its divisors is an integer number (23891007).

Almost surely, 2^47782013 is an apocalyptic number.

It is an amenable number.

47782013 is a deficient number, since it is larger than the sum of its proper divisors (1).

47782013 is an equidigital number, since it uses as much as digits as its factorization.

47782013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 47782013 is about 6912.4534718145. The cubic root of 47782013 is about 362.8731327152.

The spelling of 47782013 in words is "forty-seven million, seven hundred eighty-two thousand, thirteen".