51033201520 has 80 divisors (see below), whose sum is σ = 138756119040. Its totient is φ = 17090180352.

The previous prime is 51033201509. The next prime is 51033201671. The reversal of 51033201520 is 2510233015.

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

It is a junction number, because it is equal to n+sod(n) for n = 51033201491 and 51033201500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035580 + ... + 1083739.

It is an arithmetic number, because the mean of its divisors is an integer number (1734451488).

Almost surely, 2^51033201520 is an apocalyptic number.

It is an amenable number.

51033201520 is an abundant number, since it is smaller than the sum of its proper divisors (87722917520).

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

51033201520 is a wasteful number, since it uses less digits than its factorization.

51033201520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119382 (or 2119376 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 51033201520 its reverse (2510233015), we get a palindrome (53543434535).

The spelling of 51033201520 in words is "fifty-one billion, thirty-three million, two hundred one thousand, five hundred twenty".