4056505 has 8 divisors (see below), whose sum is σ = 5025024. Its totient is φ = 3140400.

The previous prime is 4056473. The next prime is 4056509. The reversal of 4056505 is 5056504.

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

It is not a de Polignac number, because 4056505 - 2⁵ = 4056473 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4056505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4056509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12931 + ... + 13240.

It is an arithmetic number, because the mean of its divisors is an integer number (628128).

Almost surely, 2^4056505 is an apocalyptic number.

It is an amenable number.

4056505 is a deficient number, since it is larger than the sum of its proper divisors (968519).

4056505 is a wasteful number, since it uses less digits than its factorization.

4056505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26207.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 4056505 is about 2014.0767115480. The cubic root of 4056505 is about 159.4840803941.

Subtracting 4056505 from its reverse (5056504), we obtain a palindrome (999999).

The spelling of 4056505 in words is "four million, fifty-six thousand, five hundred five".