51800083331 has 4 divisors (see below), whose sum is σ = 52099505952. Its totient is φ = 51500660712.

The previous prime is 51800083327. The next prime is 51800083333. The reversal of 51800083331 is 13338000815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51800083331 - 2² = 51800083327 is a prime.

It is a super-2 number, since 2×51800083331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51800083333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149711051 + ... + 149711396.

It is an arithmetic number, because the mean of its divisors is an integer number (13024876488).

Almost surely, 2^51800083331 is an apocalyptic number.

51800083331 is a deficient number, since it is larger than the sum of its proper divisors (299422621).

51800083331 is a wasteful number, since it uses less digits than its factorization.

51800083331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299422620.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 51800083331 in words is "fifty-one billion, eight hundred million, eighty-three thousand, three hundred thirty-one".