57643147 has 4 divisors (see below), whose sum is σ = 58181976. Its totient is φ = 57104320.

The previous prime is 57643133. The next prime is 57643153. The reversal of 57643147 is 74134675.

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 57643147 - 2¹¹ = 57641099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57643127) 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, 269254 + ... + 269467.

It is an arithmetic number, because the mean of its divisors is an integer number (14545494).

Almost surely, 2^57643147 is an apocalyptic number.

57643147 is a deficient number, since it is larger than the sum of its proper divisors (538829).

57643147 is a wasteful number, since it uses less digits than its factorization.

57643147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538828.

The product of its digits is 70560, while the sum is 37.

The square root of 57643147 is about 7592.3084104902. The cubic root of 57643147 is about 386.2921602614.

It can be divided in two parts, 5764 and 3147, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 57643147 in words is "fifty-seven million, six hundred forty-three thousand, one hundred forty-seven".