3801505 has 4 divisors (see below), whose sum is σ = 4561812. Its totient is φ = 3041200.

The previous prime is 3801503. The next prime is 3801533. The reversal of 3801505 is 5051083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5051083 = 907 ⋅5569.

It can be written as a sum of positive squares in 2 ways, for example, as 2286144 + 1515361 = 1512^2 + 1231^2 .

It is not a de Polignac number, because 3801505 - 2¹ = 3801503 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.

3801505 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3801503) 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, 380146 + ... + 380155.

It is an arithmetic number, because the mean of its divisors is an integer number (1140453).

Almost surely, 2^3801505 is an apocalyptic number.

It is an amenable number.

3801505 is a deficient number, since it is larger than the sum of its proper divisors (760307).

3801505 is an equidigital number, since it uses as much as digits as its factorization.

3801505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760306.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 3801505 is about 1949.7448551028. The cubic root of 3801505 is about 156.0696735673.

Adding to 3801505 its reverse (5051083), we get a palindrome (8852588).

The spelling of 3801505 in words is "three million, eight hundred one thousand, five hundred five".