47277161 has 2 divisors, whose sum is σ = 47277162. Its totient is φ = 47277160.

The previous prime is 47277101. The next prime is 47277169. The reversal of 47277161 is 16177274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43099225 + 4177936 = 6565^2 + 2044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47277161 is a prime.

It is a Chen prime.

It is equal to p_2847356 and since 47277161 and 2847356 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (47277169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23638580 + 23638581.

It is an arithmetic number, because the mean of its divisors is an integer number (23638581).

Almost surely, 2^47277161 is an apocalyptic number.

It is an amenable number.

47277161 is a deficient number, since it is larger than the sum of its proper divisors (1).

47277161 is an equidigital number, since it uses as much as digits as its factorization.

47277161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16464, while the sum is 35.

The square root of 47277161 is about 6875.8389306324. The cubic root of 47277161 is about 361.5905981816.

The spelling of 47277161 in words is "forty-seven million, two hundred seventy-seven thousand, one hundred sixty-one".