545290 has 16 divisors (see below), whose sum is σ = 1013760. Its totient is φ = 210960.

The previous prime is 545267. The next prime is 545291. The reversal of 545290 is 92545.

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

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (545291) 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, 570 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (63360).

2⁵⁴⁵²⁹⁰ is an apocalyptic number.

545290 is a deficient number, since it is larger than the sum of its proper divisors (468470).

545290 is a wasteful number, since it uses less digits than its factorization.

545290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 545290 is about 738.4375396741. The cubic root of 545290 is about 81.6975772665.

The spelling of 545290 in words is "five hundred forty-five thousand, two hundred ninety".