4005057 has 8 divisors (see below), whose sum is σ = 6102976. Its totient is φ = 2288592.

The previous prime is 4005049. The next prime is 4005091. The reversal of 4005057 is 7505004.

4005057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 4005057 - 2³ = 4005049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 190717 = 4005057 / (4 + 0 + 0 + 5 + 0 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4005457) 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, 95338 + ... + 95379.

It is an arithmetic number, because the mean of its divisors is an integer number (762872).

Almost surely, 2^4005057 is an apocalyptic number.

It is an amenable number.

4005057 is a deficient number, since it is larger than the sum of its proper divisors (2097919).

4005057 is a wasteful number, since it uses less digits than its factorization.

4005057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190727.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 4005057 is about 2001.2638506704. The cubic root of 4005057 is about 158.8069727516.

The spelling of 4005057 in words is "four million, five thousand, fifty-seven".