57042293 has 16 divisors (see below), whose sum is σ = 75302784. Its totient is φ = 41832960.

The previous prime is 57042269. The next prime is 57042299. The reversal of 57042293 is 39224075.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 57042293 - 2⁶ = 57042229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57042299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20480 + ... + 23097.

It is an arithmetic number, because the mean of its divisors is an integer number (4706424).

Almost surely, 2^57042293 is an apocalyptic number.

It is an amenable number.

57042293 is a deficient number, since it is larger than the sum of its proper divisors (18260491).

57042293 is a wasteful number, since it uses less digits than its factorization.

57042293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43612.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 57042293 is about 7552.6348382535. The cubic root of 57042293 is about 384.9452736065.

It can be divided in two parts, 5704 and 2293, that added together give a palindrome (7997).

The spelling of 57042293 in words is "fifty-seven million, forty-two thousand, two hundred ninety-three".