51552011000 has 128 divisors (see below), whose sum is σ = 139923763200. Its totient is φ = 17411011200.

The previous prime is 51552010981. The next prime is 51552011023. The reversal of 51552011000 is 11025515.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414041 + ... + 523959.

It is an arithmetic number, because the mean of its divisors is an integer number (1093154400).

Almost surely, 2^51552011000 is an apocalyptic number.

51552011000 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 51552011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69961881600).

51552011000 is an abundant number, since it is smaller than the sum of its proper divisors (88371752200).

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

51552011000 is a wasteful number, since it uses less digits than its factorization.

51552011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110014 (or 110000 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

Adding to 51552011000 its reverse (11025515), we get a palindrome (51563036515).

The spelling of 51552011000 in words is "fifty-one billion, five hundred fifty-two million, eleven thousand".