1553910880 has 48 divisors (see below), whose sum is σ = 3685835664. Its totient is φ = 619072000.

The previous prime is 1553910871. The next prime is 1553910887. The reversal of 1553910880 is 880193551.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553910887) 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, 20814 + ... + 59506.

It is an arithmetic number, because the mean of its divisors is an integer number (76788243).

Almost surely, 2^1553910880 is an apocalyptic number.

1553910880 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 1553910880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1842917832).

1553910880 is an abundant number, since it is smaller than the sum of its proper divisors (2131924784).

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

1553910880 is a wasteful number, since it uses less digits than its factorization.

1553910880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38959 (or 38951 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 1553910880 is about 39419.6763051144. The cubic root of 1553910880 is about 1158.2670517198.

The spelling of 1553910880 in words is "one billion, five hundred fifty-three million, nine hundred ten thousand, eight hundred eighty".