555561280 has 56 divisors (see below), whose sum is σ = 1325029608. Its totient is φ = 221872128.

The previous prime is 555561277. The next prime is 555561289. The reversal of 555561280 is 82165555.

It can be written as a sum of positive squares in 4 ways, for example, as 171714816 + 383846464 = 13104^2 + 19592^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555561289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311752 + ... + 313528.

It is an arithmetic number, because the mean of its divisors is an integer number (23661243).

Almost surely, 2^555561280 is an apocalyptic number.

It is an amenable number.

555561280 is an abundant number, since it is smaller than the sum of its proper divisors (769468328).

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

555561280 is a wasteful number, since it uses less digits than its factorization.

555561280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771 (or 2761 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 37.

The square root of 555561280 is about 23570.3474730433. The cubic root of 555561280 is about 822.0735149726.

The spelling of 555561280 in words is "five hundred fifty-five million, five hundred sixty-one thousand, two hundred eighty".