47004781 has 2 divisors, whose sum is σ = 47004782. Its totient is φ = 47004780.

The previous prime is 47004767. The next prime is 47004827. The reversal of 47004781 is 18740074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34515625 + 12489156 = 5875^2 + 3534^2 .

It is a cyclic number.

It is not a de Polignac number, because 47004781 - 2¹¹ = 47002733 is a prime.

It is a super-2 number, since 2×47004781² = 4418898873715922, which contains 22 as substring.

It is equal to p_2831971 and since 47004781 and 2831971 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 (47004731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23502390 + 23502391.

It is an arithmetic number, because the mean of its divisors is an integer number (23502391).

Almost surely, 2^47004781 is an apocalyptic number.

It is an amenable number.

47004781 is a deficient number, since it is larger than the sum of its proper divisors (1).

47004781 is an equidigital number, since it uses as much as digits as its factorization.

47004781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 47004781 is about 6856.0032817962. The cubic root of 47004781 is about 360.8948443348.

The spelling of 47004781 in words is "forty-seven million, four thousand, seven hundred eighty-one".