555961880 has 64 divisors (see below), whose sum is σ = 1328400000. Its totient is φ = 208687104.

The previous prime is 555961877. The next prime is 555961883. The reversal of 555961880 is 88169555.

It is an interprime number because it is at equal distance from previous prime (555961877) and next prime (555961883).

It is a super-2 number, since 2×555961880² = 618187224026268800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555961883) 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 15 ways as a sum of consecutive naturals, for example, 277121 + ... + 279119.

It is an arithmetic number, because the mean of its divisors is an integer number (20756250).

Almost surely, 2^555961880 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 555961880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664200000).

555961880 is an abundant number, since it is smaller than the sum of its proper divisors (772438120).

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

555961880 is a wasteful number, since it uses less digits than its factorization.

555961880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 47.

The square root of 555961880 is about 23578.8439071978. The cubic root of 555961880 is about 822.2710590531.

The spelling of 555961880 in words is "five hundred fifty-five million, nine hundred sixty-one thousand, eight hundred eighty".