57205723 has 4 divisors (see below), whose sum is σ = 57224800. Its totient is φ = 57186648.

The previous prime is 57205703. The next prime is 57205727. The reversal of 57205723 is 32750275.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57205723 - 2⁵ = 57205691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57205727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3948 + ... + 11401.

It is an arithmetic number, because the mean of its divisors is an integer number (14306200).

Almost surely, 2^57205723 is an apocalyptic number.

57205723 is a deficient number, since it is larger than the sum of its proper divisors (19077).

57205723 is a wasteful number, since it uses less digits than its factorization.

57205723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19076.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 57205723 is about 7563.4465027526. The cubic root of 57205723 is about 385.3125544211.

Adding to 57205723 its reverse (32750275), we get a palindrome (89955998).

The spelling of 57205723 in words is "fifty-seven million, two hundred five thousand, seven hundred twenty-three".