57416561 has 2 divisors, whose sum is σ = 57416562. Its totient is φ = 57416560.

The previous prime is 57416551. The next prime is 57416609. The reversal of 57416561 is 16561475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38056561 + 19360000 = 6169^2 + 4400^2 .

It is a cyclic number.

It is not a de Polignac number, because 57416561 - 2¹⁰ = 57415537 is a prime.

It is a super-2 number, since 2×57416561² = 6593322954133442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_3417839 and since 57416561 and 3417839 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 (57416551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28708280 + 28708281.

It is an arithmetic number, because the mean of its divisors is an integer number (28708281).

Almost surely, 2^57416561 is an apocalyptic number.

It is an amenable number.

57416561 is a deficient number, since it is larger than the sum of its proper divisors (1).

57416561 is an equidigital number, since it uses as much as digits as its factorization.

57416561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 35.

The square root of 57416561 is about 7577.3716419350. The cubic root of 57416561 is about 385.7853446912.

The spelling of 57416561 in words is "fifty-seven million, four hundred sixteen thousand, five hundred sixty-one".