555601280 has 128 divisors (see below), whose sum is σ = 1464613920. Its totient is φ = 200245248.

The previous prime is 555601273. The next prime is 555601351. The reversal of 555601280 is 82106555.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (32) 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 (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356984 + ... + 358536.

Almost surely, 2^555601280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555601280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732306960).

555601280 is an abundant number, since it is smaller than the sum of its proper divisors (909012640).

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

555601280 is a wasteful number, since it uses less digits than its factorization.

555601280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628 (or 1616 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 555601280 is about 23571.1959815364. The cubic root of 555601280 is about 822.0932440602.

The spelling of 555601280 in words is "five hundred fifty-five million, six hundred one thousand, two hundred eighty".