545478 has 16 divisors (see below), whose sum is σ = 1098480. Its totient is φ = 180576.

The previous prime is 545477. The next prime is 545483. The reversal of 545478 is 874545.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (68655).

2⁵⁴⁵⁴⁷⁸ is an apocalyptic number.

545478 is an abundant number, since it is smaller than the sum of its proper divisors (553002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545478 is a wasteful number, since it uses less digits than its factorization.

545478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631.

The product of its digits is 22400, while the sum is 33.

The square root of 545478 is about 738.5648245076. The cubic root of 545478 is about 81.7069651639.

The spelling of 545478 in words is "five hundred forty-five thousand, four hundred seventy-eight".