472749161 has 2 divisors, whose sum is σ = 472749162. Its totient is φ = 472749160.

The previous prime is 472749157. The next prime is 472749197. The reversal of 472749161 is 161947274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466776025 + 5973136 = 21605^2 + 2444^2 .

It is a cyclic number.

It is not a de Polignac number, because 472749161 - 2² = 472749157 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (472749131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236374580 + 236374581.

It is an arithmetic number, because the mean of its divisors is an integer number (236374581).

Almost surely, 2^472749161 is an apocalyptic number.

It is an amenable number.

472749161 is a deficient number, since it is larger than the sum of its proper divisors (1).

472749161 is an equidigital number, since it uses as much as digits as its factorization.

472749161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 472749161 is about 21742.7956114203. The cubic root of 472749161 is about 779.0109977832.

The spelling of 472749161 in words is "four hundred seventy-two million, seven hundred forty-nine thousand, one hundred sixty-one".