57145423 has 2 divisors, whose sum is σ = 57145424. Its totient is φ = 57145422.

The previous prime is 57145411. The next prime is 57145447. The reversal of 57145423 is 32454175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57145423 - 2⁵ = 57145391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57145463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28572711 + 28572712.

It is an arithmetic number, because the mean of its divisors is an integer number (28572712).

Almost surely, 2^57145423 is an apocalyptic number.

57145423 is a deficient number, since it is larger than the sum of its proper divisors (1).

57145423 is an equidigital number, since it uses as much as digits as its factorization.

57145423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 57145423 is about 7559.4591737769. The cubic root of 57145423 is about 385.1771220768.

Adding to 57145423 its reverse (32454175), we get a palindrome (89599598).

The spelling of 57145423 in words is "fifty-seven million, one hundred forty-five thousand, four hundred twenty-three".