51504442051 has 8 divisors (see below), whose sum is σ = 51619680000. Its totient is φ = 51389256072.

The previous prime is 51504442043. The next prime is 51504442057. The reversal of 51504442051 is 15024440515.

It is a happy number.

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 51504442051 - 2³ = 51504442043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51504442057) 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, 2504256 + ... + 2524738.

It is an arithmetic number, because the mean of its divisors is an integer number (6452460000).

Almost surely, 2^51504442051 is an apocalyptic number.

51504442051 is a deficient number, since it is larger than the sum of its proper divisors (115237949).

51504442051 is a wasteful number, since it uses less digits than its factorization.

51504442051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25985.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 51504442051 its reverse (15024440515), we get a palindrome (66528882566).

The spelling of 51504442051 in words is "fifty-one billion, five hundred four million, four hundred forty-two thousand, fifty-one".