545234820 has 96 divisors (see below), whose sum is σ = 1697203200. Its totient is φ = 129876480.

The previous prime is 545234783. The next prime is 545234821. The reversal of 545234820 is 28432545.

It is not an unprimeable number, because it can be changed into a prime (545234821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12906 + ... + 35454.

It is an arithmetic number, because the mean of its divisors is an integer number (17679200).

Almost surely, 2^545234820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545234820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848601600).

545234820 is an abundant number, since it is smaller than the sum of its proper divisors (1151968380).

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

545234820 is a wasteful number, since it uses less digits than its factorization.

545234820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22605 (or 22603 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 545234820 is about 23350.2638100729. The cubic root of 545234820 is about 816.9482140915.

The spelling of 545234820 in words is "five hundred forty-five million, two hundred thirty-four thousand, eight hundred twenty".