57273143 has 4 divisors (see below), whose sum is σ = 57685320. Its totient is φ = 56860968.

The previous prime is 57273137. The next prime is 57273157. The reversal of 57273143 is 34137275.

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 57273143 - 2⁴ = 57273127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57273113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205880 + ... + 206157.

It is an arithmetic number, because the mean of its divisors is an integer number (14421330).

Almost surely, 2^57273143 is an apocalyptic number.

57273143 is a deficient number, since it is larger than the sum of its proper divisors (412177).

57273143 is a wasteful number, since it uses less digits than its factorization.

57273143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412176.

The product of its digits is 17640, while the sum is 32.

The square root of 57273143 is about 7567.9021531730. The cubic root of 57273143 is about 385.4638654691.

The spelling of 57273143 in words is "fifty-seven million, two hundred seventy-three thousand, one hundred forty-three".