51543422031 has 8 divisors (see below), whose sum is σ = 69050272384. Its totient is φ = 34199426520.

The previous prime is 51543422009. The next prime is 51543422089. The reversal of 51543422031 is 13022434515.

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

It is not a de Polignac number, because 51543422031 - 2⁹ = 51543421519 is a prime.

It is a super-2 number, since 2×51543422031² (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 51543422031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51543426031) 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, 40712971 + ... + 40714236.

It is an arithmetic number, because the mean of its divisors is an integer number (8631284048).

Almost surely, 2^51543422031 is an apocalyptic number.

51543422031 is a deficient number, since it is larger than the sum of its proper divisors (17506850353).

51543422031 is a wasteful number, since it uses less digits than its factorization.

51543422031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81427421.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 51543422031 its reverse (13022434515), we get a palindrome (64565856546).

The spelling of 51543422031 in words is "fifty-one billion, five hundred forty-three million, four hundred twenty-two thousand, thirty-one".