1551110880 has 192 divisors, whose sum is σ = 5355237888. Its totient is φ = 374261760.

The previous prime is 1551110857. The next prime is 1551110881. The reversal of 1551110880 is 880111551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551110881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1388082 + ... + 1389198.

It is an arithmetic number, because the mean of its divisors is an integer number (27891864).

Almost surely, 2^1551110880 is an apocalyptic number.

1551110880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551110880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2677618944).

1551110880 is an abundant number, since it is smaller than the sum of its proper divisors (3804127008).

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

1551110880 is a wasteful number, since it uses less digits than its factorization.

1551110880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1401 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 30.

The square root of 1551110880 is about 39384.1450332491. The cubic root of 1551110880 is about 1157.5709376575.

The spelling of 1551110880 in words is "one billion, five hundred fifty-one million, one hundred ten thousand, eight hundred eighty".