57280587 has 16 divisors (see below), whose sum is σ = 93999360. Its totient is φ = 30213792.

The previous prime is 57280583. The next prime is 57280627. The reversal of 57280587 is 78508275.

It is a happy number.

It is not a de Polignac number, because 57280587 - 2² = 57280583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57280583) 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 15 ways as a sum of consecutive naturals, for example, 104637 + ... + 105182.

It is an arithmetic number, because the mean of its divisors is an integer number (5874960).

Almost surely, 2^57280587 is an apocalyptic number.

57280587 is a deficient number, since it is larger than the sum of its proper divisors (36718773).

57280587 is a wasteful number, since it uses less digits than its factorization.

57280587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209842.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 57280587 is about 7568.3939511630. The cubic root of 57280587 is about 385.4805647954.

The spelling of 57280587 in words is "fifty-seven million, two hundred eighty thousand, five hundred eighty-seven".