545590820 has 24 divisors (see below), whose sum is σ = 1195556544. Its totient is φ = 208747616.

The previous prime is 545590817. The next prime is 545590847. The reversal of 545590820 is 28095545.

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, 592574 + ... + 593493.

It is an arithmetic number, because the mean of its divisors is an integer number (49814856).

Almost surely, 2^545590820 is an apocalyptic number.

It is an amenable number.

545590820 is an abundant number, since it is smaller than the sum of its proper divisors (649965724).

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

545590820 is a wasteful number, since it uses less digits than its factorization.

545590820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186099 (or 1186097 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 545590820 is about 23357.8856063643. The cubic root of 545590820 is about 817.1259786549.

The spelling of 545590820 in words is "five hundred forty-five million, five hundred ninety thousand, eight hundred twenty".