57242923 has 4 divisors (see below), whose sum is σ = 57272488. Its totient is φ = 57213360.

The previous prime is 57242849. The next prime is 57242981. The reversal of 57242923 is 32924275.

It is a happy number.

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 57242923 - 2⁹ = 57242411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57242623) 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, 11658 + ... + 15823.

It is an arithmetic number, because the mean of its divisors is an integer number (14318122).

Almost surely, 2^57242923 is an apocalyptic number.

57242923 is a deficient number, since it is larger than the sum of its proper divisors (29565).

57242923 is a wasteful number, since it uses less digits than its factorization.

57242923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29564.

The product of its digits is 30240, while the sum is 34.

The square root of 57242923 is about 7565.9052994338. The cubic root of 57242923 is about 385.3960572621.

The spelling of 57242923 in words is "fifty-seven million, two hundred forty-two thousand, nine hundred twenty-three".