57145 has 8 divisors (see below), whose sum is σ = 74880. Its totient is φ = 41520.

The previous prime is 57143. The next prime is 57149. The reversal of 57145 is 54175.

57145 = T₄ + T₅ + ... + T₆₉.

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

It is not a de Polignac number, because 57145 - 2¹ = 57143 is a prime.

57145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (57143) 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 7 ways as a sum of consecutive naturals, for example, 465 + ... + 574.

It is an arithmetic number, because the mean of its divisors is an integer number (9360).

2⁵⁷¹⁴⁵ is an apocalyptic number.

57145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57145 is a deficient number, since it is larger than the sum of its proper divisors (17735).

57145 is a wasteful number, since it uses less digits than its factorization.

57145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055.

The product of its digits is 700, while the sum is 22.

The square root of 57145 is about 239.0502039321. The cubic root of 57145 is about 38.5176171693.

It can be divided in two parts, 571 and 45, that added together give a palindrome (616).

The spelling of 57145 in words is "fifty-seven thousand, one hundred forty-five".