545449 has 2 divisors, whose sum is σ = 545450. Its totient is φ = 545448.

The previous prime is 545443. The next prime is 545473. The reversal of 545449 is 944545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446224 + 99225 = 668^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 545449 - 2⁹ = 544937 is a prime.

It is a super-2 number, since 2×545449² = 595029223202, which contains 22 as substring.

It is equal to p₄₄₉₇₇ and since 545449 and 44977 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545449.

It is not a weakly prime, because it can be changed into another prime (545443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272724 + 272725.

It is an arithmetic number, because the mean of its divisors is an integer number (272725).

2⁵⁴⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

545449 is a deficient number, since it is larger than the sum of its proper divisors (1).

545449 is an equidigital number, since it uses as much as digits as its factorization.

545449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 545449 is about 738.5451915760. The cubic root of 545449 is about 81.7055171715.

It can be divided in two parts, 5 and 45449, that added together give a palindrome (45454).

The spelling of 545449 in words is "five hundred forty-five thousand, four hundred forty-nine".