4451661 has 12 divisors (see below), whose sum is σ = 6580288. Its totient is φ = 2898504.

The previous prime is 4451653. The next prime is 4451677. The reversal of 4451661 is 1661544.

It is not a de Polignac number, because 4451661 - 2³ = 4451653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4451611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5365 + ... + 6138.

Almost surely, 2^4451661 is an apocalyptic number.

It is an amenable number.

4451661 is a deficient number, since it is larger than the sum of its proper divisors (2128627).

4451661 is a wasteful number, since it uses less digits than its factorization.

4451661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11552 (or 11549 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 4451661 is about 2109.8959689994. The cubic root of 4451661 is about 164.5030779504.

The spelling of 4451661 in words is "four million, four hundred fifty-one thousand, six hundred sixty-one".