550655620 has 12 divisors (see below), whose sum is σ = 1156376844. Its totient is φ = 220262240.

The previous prime is 550655603. The next prime is 550655621. The reversal of 550655620 is 26556055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 215326276 + 335329344 = 14674^2 + 18312^2 .

It is a super-2 number, since 2×550655620² = 606443223675168800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (550655621) 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 3 ways as a sum of consecutive naturals, for example, 13766371 + ... + 13766410.

It is an arithmetic number, because the mean of its divisors is an integer number (96364737).

Almost surely, 2^550655620 is an apocalyptic number.

It is an amenable number.

550655620 is an abundant number, since it is smaller than the sum of its proper divisors (605721224).

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

550655620 is a wasteful number, since it uses less digits than its factorization.

550655620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27532790 (or 27532788 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 550655620 is about 23466.0525014328. The cubic root of 550655620 is about 819.6466949117.

The spelling of 550655620 in words is "five hundred fifty million, six hundred fifty-five thousand, six hundred twenty".