51885047231 has 8 divisors (see below), whose sum is σ = 53674450944. Its totient is φ = 50102874360.

The previous prime is 51885047213. The next prime is 51885047257. The reversal of 51885047231 is 13274058815.

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

It is a cyclic number.

It is not a de Polignac number, because 51885047231 - 2⁶ = 51885047167 is a prime.

It is a super-2 number, since 2×51885047231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51885047531) 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, 1793111 + ... + 1821816.

It is an arithmetic number, because the mean of its divisors is an integer number (6709306368).

Almost surely, 2^51885047231 is an apocalyptic number.

51885047231 is a deficient number, since it is larger than the sum of its proper divisors (1789403713).

51885047231 is a wasteful number, since it uses less digits than its factorization.

51885047231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615421.

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 51885047231 in words is "fifty-one billion, eight hundred eighty-five million, forty-seven thousand, two hundred thirty-one".