57145471 has 4 divisors (see below), whose sum is σ = 58082344. Its totient is φ = 56208600.

The previous prime is 57145469. The next prime is 57145477. The reversal of 57145471 is 17454175.

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 57145471 - 2¹ = 57145469 is a prime.

It is a super-3 number, since 3×57145471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57145477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468345 + ... + 468466.

It is an arithmetic number, because the mean of its divisors is an integer number (14520586).

Almost surely, 2^57145471 is an apocalyptic number.

57145471 is a deficient number, since it is larger than the sum of its proper divisors (936873).

57145471 is an equidigital number, since it uses as much as digits as its factorization.

57145471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936872.

The product of its digits is 19600, while the sum is 34.

The square root of 57145471 is about 7559.4623486065. The cubic root of 57145471 is about 385.1772299216.

The spelling of 57145471 in words is "fifty-seven million, one hundred forty-five thousand, four hundred seventy-one".