57287330 has 8 divisors (see below), whose sum is σ = 103117212. Its totient is φ = 22914928.

The previous prime is 57287281. The next prime is 57287341. The reversal of 57287330 is 3378275.

It can be written as a sum of positive squares in 2 ways, for example, as 52548001 + 4739329 = 7249^2 + 2177^2 .

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

It is an unprimeable number.

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, 2864357 + ... + 2864376.

Almost surely, 2^57287330 is an apocalyptic number.

57287330 is a deficient number, since it is larger than the sum of its proper divisors (45829882).

57287330 is a wasteful number, since it uses less digits than its factorization.

57287330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728740.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 57287330 is about 7568.8394090508. The cubic root of 57287330 is about 385.4956903007.

The spelling of 57287330 in words is "fifty-seven million, two hundred eighty-seven thousand, three hundred thirty".