545520420 has 72 divisors (see below), whose sum is σ = 1716047424. Its totient is φ = 145470816.

The previous prime is 545520407. The next prime is 545520449. The reversal of 545520420 is 24025545.

545520420 is a `hidden beast` number, since 5 + 455 + 204 + 2 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51264 + ... + 60983.

It is an arithmetic number, because the mean of its divisors is an integer number (23833992).

Almost surely, 2^545520420 is an apocalyptic number.

It is an amenable number.

545520420 is an abundant number, since it is smaller than the sum of its proper divisors (1170527004).

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

545520420 is a wasteful number, since it uses less digits than its factorization.

545520420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112271 (or 112257 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 545520420 is about 23356.3785720304. The cubic root of 545520420 is about 817.0908313484.

Adding to 545520420 its reverse (24025545), we get a palindrome (569545965).

The spelling of 545520420 in words is "five hundred forty-five million, five hundred twenty thousand, four hundred twenty".