51530035233 has 8 divisors (see below), whose sum is σ = 69576419200. Its totient is φ = 33918504048.

The previous prime is 51530035217. The next prime is 51530035237. The reversal of 51530035233 is 33253003515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51530035233 - 2⁴ = 51530035217 is a prime.

It is a super-2 number, since 2×51530035233² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51530035233.

It is not an unprimeable number, because it can be changed into a prime (51530035237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108712918 + ... + 108713391.

It is an arithmetic number, because the mean of its divisors is an integer number (8697052400).

Almost surely, 2^51530035233 is an apocalyptic number.

It is an amenable number.

51530035233 is a deficient number, since it is larger than the sum of its proper divisors (18046383967).

51530035233 is a wasteful number, since it uses less digits than its factorization.

51530035233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217426391.

The product of its (nonzero) digits is 20250, while the sum is 30.

Adding to 51530035233 its reverse (33253003515), we get a palindrome (84783038748).

The spelling of 51530035233 in words is "fifty-one billion, five hundred thirty million, thirty-five thousand, two hundred thirty-three".