57028243 has 4 divisors (see below), whose sum is σ = 57045448. Its totient is φ = 57011040.

The previous prime is 57028241. The next prime is 57028259. The reversal of 57028243 is 34282075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57028243 - 2¹ = 57028241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57028241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1878 + ... + 10843.

It is an arithmetic number, because the mean of its divisors is an integer number (14261362).

Almost surely, 2^57028243 is an apocalyptic number.

57028243 is a deficient number, since it is larger than the sum of its proper divisors (17205).

57028243 is a wasteful number, since it uses less digits than its factorization.

57028243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17204.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 57028243 is about 7551.7046419997. The cubic root of 57028243 is about 384.9136659173.

The spelling of 57028243 in words is "fifty-seven million, twenty-eight thousand, two hundred forty-three".