4152805 has 4 divisors (see below), whose sum is σ = 4983372. Its totient is φ = 3322240.

The previous prime is 4152803. The next prime is 4152809. The reversal of 4152805 is 5082514.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 770884 + 3381921 = 878^2 + 1839^2 .

It is not a de Polignac number, because 4152805 - 2¹ = 4152803 is a prime.

It is a Duffinian number.

4152805 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4152805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4152803) 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, 415276 + ... + 415285.

It is an arithmetic number, because the mean of its divisors is an integer number (1245843).

Almost surely, 2^4152805 is an apocalyptic number.

It is an amenable number.

4152805 is a deficient number, since it is larger than the sum of its proper divisors (830567).

4152805 is an equidigital number, since it uses as much as digits as its factorization.

4152805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830566.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 4152805 is about 2037.8432226253. The cubic root of 4152805 is about 160.7362552918.

The spelling of 4152805 in words is "four million, one hundred fifty-two thousand, eight hundred five".