555554920 has 32 divisors (see below), whose sum is σ = 1280490120. Its totient is φ = 216801280.

The previous prime is 555554897. The next prime is 555554921. The reversal of 555554920 is 29455555.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 392277636 + 163277284 = 19806^2 + 12778^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (555554921) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 167737 + ... + 171016.

Almost surely, 2^555554920 is an apocalyptic number.

It is an amenable number.

555554920 is an abundant number, since it is smaller than the sum of its proper divisors (724935200).

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

555554920 is a wasteful number, since it uses less digits than its factorization.

555554920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338805 (or 338801 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The square root of 555554920 is about 23570.2125573784. The cubic root of 555554920 is about 822.0703779604.

The spelling of 555554920 in words is "five hundred fifty-five million, five hundred fifty-four thousand, nine hundred twenty".