51531033200 has 60 divisors (see below), whose sum is σ = 125547085008. Its totient is φ = 20322086400.

The previous prime is 51531033173. The next prime is 51531033241. The reversal of 51531033200 is 233013515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 878837 + ... + 935636.

Almost surely, 2^51531033200 is an apocalyptic number.

51531033200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51531033200 is an abundant number, since it is smaller than the sum of its proper divisors (74016051808).

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

51531033200 is a wasteful number, since it uses less digits than its factorization.

51531033200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814562 (or 1814551 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 51531033200 its reverse (233013515), we get a palindrome (51764046715).

The spelling of 51531033200 in words is "fifty-one billion, five hundred thirty-one million, thirty-three thousand, two hundred".