57723161 has 2 divisors, whose sum is σ = 57723162. Its totient is φ = 57723160.

The previous prime is 57723139. The next prime is 57723163. The reversal of 57723161 is 16132775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33408400 + 24314761 = 5780^2 + 4931^2 .

It is a cyclic number.

It is not a de Polignac number, because 57723161 - 2¹⁴ = 57706777 is a prime.

It is a Sophie Germain prime.

Together with 57723163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57723163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28861580 + 28861581.

It is an arithmetic number, because the mean of its divisors is an integer number (28861581).

Almost surely, 2^57723161 is an apocalyptic number.

It is an amenable number.

57723161 is a deficient number, since it is larger than the sum of its proper divisors (1).

57723161 is an equidigital number, since it uses as much as digits as its factorization.

57723161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 32.

The square root of 57723161 is about 7597.5759950131. The cubic root of 57723161 is about 386.4708139964.

The spelling of 57723161 in words is "fifty-seven million, seven hundred twenty-three thousand, one hundred sixty-one".