449551 has 4 divisors (see below), whose sum is σ = 454104. Its totient is φ = 445000.

The previous prime is 449549. The next prime is 449557. The reversal of 449551 is 155944.

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

It is a cyclic number.

It is not a de Polignac number, because 449551 - 2¹ = 449549 is a prime.

It is a super-2 number, since 2×449551² = 404192203202, which contains 22 as substring.

It is a Duffinian number.

449551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (113526).

2⁴⁴⁹⁵⁵¹ is an apocalyptic number.

449551 is a deficient number, since it is larger than the sum of its proper divisors (4553).

449551 is a wasteful number, since it uses less digits than its factorization.

449551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4552.

The product of its digits is 3600, while the sum is 28.

The square root of 449551 is about 670.4856448873. The cubic root of 449551 is about 76.6054478738.

It can be divided in two parts, 449 and 551, that added together give a cube (1000 = 10³).

The spelling of 449551 in words is "four hundred forty-nine thousand, five hundred fifty-one".