51521333010 has 128 divisors (see below), whose sum is σ = 146372935680. Its totient is φ = 11355891456.

The previous prime is 51521332979. The next prime is 51521333021. The reversal of 51521333010 is 1033312515.

It is a Curzon 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, 5250769 + ... + 5260571.

It is an arithmetic number, because the mean of its divisors is an integer number (1143538560).

Almost surely, 2^51521333010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51521333010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73186467840).

51521333010 is an abundant number, since it is smaller than the sum of its proper divisors (94851602670).

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

51521333010 is a wasteful number, since it uses less digits than its factorization.

51521333010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712.

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 51521333010 its reverse (1033312515), we get a palindrome (52554645525).

The spelling of 51521333010 in words is "fifty-one billion, five hundred twenty-one million, three hundred thirty-three thousand, ten".