57123923 has 4 divisors (see below), whose sum is σ = 57143640. Its totient is φ = 57104208.

The previous prime is 57123901. The next prime is 57123943. The reversal of 57123923 is 32932175.

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 57123923 - 2⁸ = 57123667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57123923.

It is not an unprimeable number, because it can be changed into a prime (57123943) 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, 4565 + ... + 11622.

It is an arithmetic number, because the mean of its divisors is an integer number (14285910).

Almost surely, 2^57123923 is an apocalyptic number.

57123923 is a deficient number, since it is larger than the sum of its proper divisors (19717).

57123923 is a wasteful number, since it uses less digits than its factorization.

57123923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19716.

The product of its digits is 11340, while the sum is 32.

The square root of 57123923 is about 7558.0369805922. The cubic root of 57123923 is about 385.1288105558.

The spelling of 57123923 in words is "fifty-seven million, one hundred twenty-three thousand, nine hundred twenty-three".