4251505 has 4 divisors (see below), whose sum is σ = 5101812. Its totient is φ = 3401200.

The previous prime is 4251493. The next prime is 4251523. The reversal of 4251505 is 5051524.

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 2792241 + 1459264 = 1671^2 + 1208^2 .

It is not a de Polignac number, because 4251505 - 2⁹ = 4250993 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425146 + ... + 425155.

It is an arithmetic number, because the mean of its divisors is an integer number (1275453).

Almost surely, 2^4251505 is an apocalyptic number.

It is an amenable number.

4251505 is a deficient number, since it is larger than the sum of its proper divisors (850307).

4251505 is an equidigital number, since it uses as much as digits as its factorization.

4251505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850306.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 4251505 is about 2061.9177966156. The cubic root of 4251505 is about 161.9997078692. Note that the first 3 decimals are identical.

The spelling of 4251505 in words is "four million, two hundred fifty-one thousand, five hundred five".