1553111880 has 64 divisors (see below), whose sum is σ = 4663569600. Its totient is φ = 413786880.

The previous prime is 1553111867. The next prime is 1553111881. The reversal of 1553111880 is 881113551.

It is not an unprimeable number, because it can be changed into a prime (1553111881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142215 + ... + 152745.

It is an arithmetic number, because the mean of its divisors is an integer number (72868275).

Almost surely, 2^1553111880 is an apocalyptic number.

1553111880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1553111880 is an abundant number, since it is smaller than the sum of its proper divisors (3110457720).

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

1553111880 is a wasteful number, since it uses less digits than its factorization.

1553111880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11774 (or 11770 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 33.

The square root of 1553111880 is about 39409.5404692823. The cubic root of 1553111880 is about 1158.0684959230.

The spelling of 1553111880 in words is "one billion, five hundred fifty-three million, one hundred eleven thousand, eight hundred eighty".