51533525205 has 24 divisors (see below), whose sum is σ = 89564282808. Its totient is φ = 27410852736.

The previous prime is 51533525179. The next prime is 51533525213. The reversal of 51533525205 is 50252533515.

51533525205 is a `hidden beast` number, since 51 + 5 + 33 + 52 + 520 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7375546161 + 44157979044 = 85881^2 + 210138^2 .

It is not a de Polignac number, because 51533525205 - 2⁷ = 51533525077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51533525205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1518322 + ... + 1551891.

It is an arithmetic number, because the mean of its divisors is an integer number (3731845117).

Almost surely, 2^51533525205 is an apocalyptic number.

It is an amenable number.

51533525205 is a deficient number, since it is larger than the sum of its proper divisors (38030757603).

51533525205 is a wasteful number, since it uses less digits than its factorization.

51533525205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070597 (or 3070594 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The spelling of 51533525205 in words is "fifty-one billion, five hundred thirty-three million, five hundred twenty-five thousand, two hundred five".