57287242 has 8 divisors (see below), whose sum is σ = 90453600. Its totient is φ = 27136044.

The previous prime is 57287231. The next prime is 57287249. The reversal of 57287242 is 24278275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (57287249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753742 + ... + 753817.

It is an arithmetic number, because the mean of its divisors is an integer number (11306700).

Almost surely, 2^57287242 is an apocalyptic number.

57287242 is a deficient number, since it is larger than the sum of its proper divisors (33166358).

57287242 is a wasteful number, since it uses less digits than its factorization.

57287242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507580.

The product of its digits is 62720, while the sum is 37.

The square root of 57287242 is about 7568.8335957398. The cubic root of 57287242 is about 385.4954929118.

The spelling of 57287242 in words is "fifty-seven million, two hundred eighty-seven thousand, two hundred forty-two".