4487081 has 4 divisors (see below), whose sum is σ = 4596564. Its totient is φ = 4377600.

The previous prime is 4487053. The next prime is 4487089. The reversal of 4487081 is 1807844.

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 1651225 + 2835856 = 1285^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 4487081 - 2²² = 292777 is a prime.

It is a super-2 number, since 2×4487081² = 40267791801122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4487089) 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, 54680 + ... + 54761.

It is an arithmetic number, because the mean of its divisors is an integer number (1149141).

Almost surely, 2^4487081 is an apocalyptic number.

4487081 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4487081 is a deficient number, since it is larger than the sum of its proper divisors (109483).

4487081 is a wasteful number, since it uses less digits than its factorization.

4487081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109482.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 4487081 is about 2118.2731174237. The cubic root of 4487081 is about 164.9382199073.

The spelling of 4487081 in words is "four million, four hundred eighty-seven thousand, eighty-one".