1553065500 has 192 divisors, whose sum is σ = 5200505856. Its totient is φ = 352800000.

The previous prime is 1553065483. The next prime is 1553065513. The reversal of 1553065500 is 55603551.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2215150 + ... + 2215850.

It is an arithmetic number, because the mean of its divisors is an integer number (27085968).

Almost surely, 2^1553065500 is an apocalyptic number.

1553065500 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 1553065500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600252928).

1553065500 is an abundant number, since it is smaller than the sum of its proper divisors (3647440356).

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

1553065500 is a wasteful number, since it uses less digits than its factorization.

1553065500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 1553065500 is about 39408.9520286952. The cubic root of 1553065500 is about 1158.0569681526.

The spelling of 1553065500 in words is "one billion, five hundred fifty-three million, sixty-five thousand, five hundred".