51550042454 has 8 divisors (see below), whose sum is σ = 77391554760. Its totient is φ = 25752857536.

The previous prime is 51550042409. The next prime is 51550042487. The reversal of 51550042454 is 45424005515.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11078939 + ... + 11083590.

It is an arithmetic number, because the mean of its divisors is an integer number (9673944345).

Almost surely, 2^51550042454 is an apocalyptic number.

51550042454 is a deficient number, since it is larger than the sum of its proper divisors (25841512306).

51550042454 is a wasteful number, since it uses less digits than its factorization.

51550042454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22163694.

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 51550042454 its reverse (45424005515), we get a palindrome (96974047969).

The spelling of 51550042454 in words is "fifty-one billion, five hundred fifty million, forty-two thousand, four hundred fifty-four".