555520420 has 48 divisors (see below), whose sum is σ = 1435811328. Its totient is φ = 175812480.

The previous prime is 555520417. The next prime is 555520451. The reversal of 555520420 is 24025555.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150796 + ... + 154435.

It is an arithmetic number, because the mean of its divisors is an integer number (29912736).

Almost surely, 2^555520420 is an apocalyptic number.

It is an amenable number.

555520420 is an abundant number, since it is smaller than the sum of its proper divisors (880290908).

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

555520420 is a wasteful number, since it uses less digits than its factorization.

555520420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305260 (or 305258 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 555520420 is about 23569.4806900789. The cubic root of 555520420 is about 822.0533607319.

Adding to 555520420 its reverse (24025555), we get a palindrome (579545975).

The spelling of 555520420 in words is "five hundred fifty-five million, five hundred twenty thousand, four hundred twenty".