545404 has 6 divisors (see below), whose sum is σ = 954464. Its totient is φ = 272700.

The previous prime is 545387. The next prime is 545429. The reversal of 545404 is 404545.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68172 + ... + 68179.

2⁵⁴⁵⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

545404 is a deficient number, since it is larger than the sum of its proper divisors (409060).

545404 is a wasteful number, since it uses less digits than its factorization.

545404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136355 (or 136353 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 545404 is about 738.5147256487. The cubic root of 545404 is about 81.7032701852.

Adding to 545404 its reverse (404545), we get a palindrome (949949).

It can be divided in two parts, 545 and 404, that added together give a palindrome (949).

The spelling of 545404 in words is "five hundred forty-five thousand, four hundred four".