51530533455 has 8 divisors (see below), whose sum is σ = 82448853552. Its totient is φ = 27482951168.

The previous prime is 51530533429. The next prime is 51530533459. The reversal of 51530533455 is 55433503515.

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 51530533455 - 2⁶ = 51530533391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51530533459) 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, 1717684434 + ... + 1717684463.

It is an arithmetic number, because the mean of its divisors is an integer number (10306106694).

Almost surely, 2^51530533455 is an apocalyptic number.

51530533455 is a deficient number, since it is larger than the sum of its proper divisors (30918320097).

51530533455 is a wasteful number, since it uses less digits than its factorization.

51530533455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435368905.

The product of its (nonzero) digits is 337500, while the sum is 39.

The spelling of 51530533455 in words is "fifty-one billion, five hundred thirty million, five hundred thirty-three thousand, four hundred fifty-five".