47113861 has 2 divisors, whose sum is σ = 47113862. Its totient is φ = 47113860.

The previous prime is 47113849. The next prime is 47113897. The reversal of 47113861 is 16831174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41796225 + 5317636 = 6465^2 + 2306^2 .

It is a cyclic number.

It is not a de Polignac number, because 47113861 - 2⁹ = 47113349 is a prime.

It is equal to p_2838082 and since 47113861 and 2838082 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47114861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23556930 + 23556931.

It is an arithmetic number, because the mean of its divisors is an integer number (23556931).

Almost surely, 2^47113861 is an apocalyptic number.

It is an amenable number.

47113861 is a deficient number, since it is larger than the sum of its proper divisors (1).

47113861 is an equidigital number, since it uses as much as digits as its factorization.

47113861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 47113861 is about 6863.9537440166. The cubic root of 47113861 is about 361.1737946639.

It can be divided in two parts, 47113 and 861, that added together give a palindrome (47974).

The spelling of 47113861 in words is "forty-seven million, one hundred thirteen thousand, eight hundred sixty-one".