51895047457 has 8 divisors (see below), whose sum is σ = 56721447072. Its totient is φ = 47086759200.

The previous prime is 51895047437. The next prime is 51895047511. The reversal of 51895047457 is 75474059815.

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 51895047457 - 2³¹ = 49747563809 is a prime.

It is a super-3 number, since 3×51895047457³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51895047398 and 51895047407.

It is not an unprimeable number, because it can be changed into a prime (51895047437) 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, 4521843 + ... + 4533304.

It is an arithmetic number, because the mean of its divisors is an integer number (7090180884).

Almost surely, 2^51895047457 is an apocalyptic number.

It is an amenable number.

51895047457 is a deficient number, since it is larger than the sum of its proper divisors (4826399615).

51895047457 is a wasteful number, since it uses less digits than its factorization.

51895047457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055679.

The product of its (nonzero) digits is 7056000, while the sum is 55.

The spelling of 51895047457 in words is "fifty-one billion, eight hundred ninety-five million, forty-seven thousand, four hundred fifty-seven".