20160457 has 2 divisors, whose sum is σ = 20160458. Its totient is φ = 20160456.

The previous prime is 20160433. The next prime is 20160461. The reversal of 20160457 is 75406102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12702096 + 7458361 = 3564^2 + 2731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20160457 is a prime.

It is not a weakly prime, because it can be changed into another prime (20161457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080228 + 10080229.

It is an arithmetic number, because the mean of its divisors is an integer number (10080229).

Almost surely, 2^20160457 is an apocalyptic number.

It is an amenable number.

20160457 is a deficient number, since it is larger than the sum of its proper divisors (1).

20160457 is an equidigital number, since it uses as much as digits as its factorization.

20160457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20160457 is about 4490.0397548351. The cubic root of 20160457 is about 272.1657411504.

Adding to 20160457 its reverse (75406102), we get a palindrome (95566559).

The spelling of 20160457 in words is "twenty million, one hundred sixty thousand, four hundred fifty-seven".