51433054431 has 16 divisors (see below), whose sum is σ = 74855881728. Its totient is φ = 31153145600.

The previous prime is 51433054403. The next prime is 51433054451. The reversal of 51433054431 is 13445033415.

It is a cyclic number.

It is not a de Polignac number, because 51433054431 - 2⁶ = 51433054367 is a prime.

It is a super-2 number, since 2×51433054431² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 51433054392 and 51433054401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51433054451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403215 + ... + 515216.

It is an arithmetic number, because the mean of its divisors is an integer number (4678492608).

Almost surely, 2^51433054431 is an apocalyptic number.

51433054431 is a deficient number, since it is larger than the sum of its proper divisors (23422827297).

51433054431 is a wasteful number, since it uses less digits than its factorization.

51433054431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920142.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 51433054431 its reverse (13445033415), we get a palindrome (64878087846).

The spelling of 51433054431 in words is "fifty-one billion, four hundred thirty-three million, fifty-four thousand, four hundred thirty-one".