57284289 has 6 divisors (see below), whose sum is σ = 82743986. Its totient is φ = 38189520.

The previous prime is 57284287. The next prime is 57284303. The reversal of 57284289 is 98248275.

It can be written as a sum of positive squares in only one way, i.e., 56250000 + 1034289 = 7500^2 + 1017^2 .

It is not a de Polignac number, because 57284289 - 2¹ = 57284287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57284287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3182452 + ... + 3182469.

Almost surely, 2^57284289 is an apocalyptic number.

It is an amenable number.

57284289 is a deficient number, since it is larger than the sum of its proper divisors (25459697).

57284289 is a wasteful number, since it uses less digits than its factorization.

57284289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364927 (or 6364924 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 57284289 is about 7568.6385169329. The cubic root of 57284289 is about 385.4888690534.

The spelling of 57284289 in words is "fifty-seven million, two hundred eighty-four thousand, two hundred eighty-nine".