51655362533 has 4 divisors (see below), whose sum is σ = 52166801868. Its totient is φ = 51143923200.

The previous prime is 51655362511. The next prime is 51655362541. The reversal of 51655362533 is 33526355615.

51655362533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32451500449 + 19203862084 = 180143^2 + 138578^2 .

It is a cyclic number.

It is not a de Polignac number, because 51655362533 - 2³⁰ = 50581620709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51655362503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255719516 + ... + 255719717.

It is an arithmetic number, because the mean of its divisors is an integer number (13041700467).

Almost surely, 2^51655362533 is an apocalyptic number.

It is an amenable number.

51655362533 is a deficient number, since it is larger than the sum of its proper divisors (511439335).

51655362533 is a wasteful number, since it uses less digits than its factorization.

51655362533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511439334.

The product of its digits is 1215000, while the sum is 44.

The spelling of 51655362533 in words is "fifty-one billion, six hundred fifty-five million, three hundred sixty-two thousand, five hundred thirty-three".