51314533521 has 8 divisors (see below), whose sum is σ = 69541007424. Its totient is φ = 33648874320.

The previous prime is 51314533519. The next prime is 51314533531. The reversal of 51314533521 is 12533541315.

51314533521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51314533521 - 2¹ = 51314533519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51314533511) 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, 140203461 + ... + 140203826.

It is an arithmetic number, because the mean of its divisors is an integer number (8692625928).

Almost surely, 2^51314533521 is an apocalyptic number.

It is an amenable number.

51314533521 is a deficient number, since it is larger than the sum of its proper divisors (18226473903).

51314533521 is a wasteful number, since it uses less digits than its factorization.

51314533521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280407351.

The product of its digits is 27000, while the sum is 33.

The spelling of 51314533521 in words is "fifty-one billion, three hundred fourteen million, five hundred thirty-three thousand, five hundred twenty-one".