545402 has 16 divisors (see below), whose sum is σ = 961632. Its totient is φ = 228720.

The previous prime is 545387. The next prime is 545429. The reversal of 545402 is 204545.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668 + ... + 1239.

It is an arithmetic number, because the mean of its divisors is an integer number (60102).

2⁵⁴⁵⁴⁰² is an apocalyptic number.

545402 is a deficient number, since it is larger than the sum of its proper divisors (416230).

545402 is a wasteful number, since it uses less digits than its factorization.

545402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 545402 is about 738.5133715783. The cubic root of 545402 is about 81.7031703162.

Adding to 545402 its reverse (204545), we get a palindrome (749947).

The spelling of 545402 in words is "five hundred forty-five thousand, four hundred two".