51431422051 has 4 divisors (see below), whose sum is σ = 51700696704. Its totient is φ = 51162147400.

The previous prime is 51431422037. The next prime is 51431422067. The reversal of 51431422051 is 15022413415.

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 51431422051 - 2⁹ = 51431421539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51431422001) 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, 134637040 + ... + 134637421.

It is an arithmetic number, because the mean of its divisors is an integer number (12925174176).

Almost surely, 2^51431422051 is an apocalyptic number.

51431422051 is a deficient number, since it is larger than the sum of its proper divisors (269274653).

51431422051 is a wasteful number, since it uses less digits than its factorization.

51431422051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269274652.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 51431422051 its reverse (15022413415), we get a palindrome (66453835466).

The spelling of 51431422051 in words is "fifty-one billion, four hundred thirty-one million, four hundred twenty-two thousand, fifty-one".