477861161 has 2 divisors, whose sum is σ = 477861162. Its totient is φ = 477861160.

The previous prime is 477861149. The next prime is 477861221. The reversal of 477861161 is 161168774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475240000 + 2621161 = 21800^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 477861161 - 2¹⁴ = 477844777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (477861121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238930580 + 238930581.

It is an arithmetic number, because the mean of its divisors is an integer number (238930581).

Almost surely, 2^477861161 is an apocalyptic number.

It is an amenable number.

477861161 is a deficient number, since it is larger than the sum of its proper divisors (1).

477861161 is an equidigital number, since it uses as much as digits as its factorization.

477861161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 477861161 is about 21860.0357044539. The cubic root of 477861161 is about 781.8088422156.

The spelling of 477861161 in words is "four hundred seventy-seven million, eight hundred sixty-one thousand, one hundred sixty-one".