47777461 has 2 divisors, whose sum is σ = 47777462. Its totient is φ = 47777460.

The previous prime is 47777437. The next prime is 47777467. The reversal of 47777461 is 16477774.

47777461 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., 46580625 + 1196836 = 6825^2 + 1094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47777461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47777467) 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, 23888730 + 23888731.

It is an arithmetic number, because the mean of its divisors is an integer number (23888731).

Almost surely, 2^47777461 is an apocalyptic number.

It is an amenable number.

47777461 is a deficient number, since it is larger than the sum of its proper divisors (1).

47777461 is an equidigital number, since it uses as much as digits as its factorization.

47777461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230496, while the sum is 43.

The square root of 47777461 is about 6912.1242031665. The cubic root of 47777461 is about 362.8616091951.

The spelling of 47777461 in words is "forty-seven million, seven hundred seventy-seven thousand, four hundred sixty-one".