5121554000 has 80 divisors (see below), whose sum is σ = 12594104640. Its totient is φ = 2013852800.

The previous prime is 5121553981. The next prime is 5121554041. The reversal of 5121554000 is 4551215.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 96299 + ... + 139701.

It is an arithmetic number, because the mean of its divisors is an integer number (157426308).

Almost surely, 2^5121554000 is an apocalyptic number.

5121554000 is a gapful number since it is divisible by the number (50) 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 5121554000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6297052320).

5121554000 is an abundant number, since it is smaller than the sum of its proper divisors (7472550640).

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

5121554000 is a wasteful number, since it uses less digits than its factorization.

5121554000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43485 (or 43469 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 5121554000 is about 71565.0333612722. The cubic root of 5121554000 is about 1723.7221089444.

The spelling of 5121554000 in words is "five billion, one hundred twenty-one million, five hundred fifty-four thousand".