52171585245 has 60 divisors (see below), whose sum is σ = 101269947636. Its totient is φ = 25684439040.

The previous prime is 52171585241. The next prime is 52171585289. The reversal of 52171585245 is 54258517125.

It is a happy number.

52171585245 is a `hidden beast` number, since 5 + 2 + 1 + 71 + 58 + 524 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 982070244 + 51189515001 = 31338^2 + 226251^2 .

It is not a de Polignac number, because 52171585245 - 2² = 52171585241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 52171585245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52171585241) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 312676 + ... + 449565.

Almost surely, 2^52171585245 is an apocalyptic number.

It is an amenable number.

52171585245 is a deficient number, since it is larger than the sum of its proper divisors (49098362391).

52171585245 is a wasteful number, since it uses less digits than its factorization.

52171585245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762284 (or 762262 counting only the distinct ones).

The product of its digits is 560000, while the sum is 45.

The spelling of 52171585245 in words is "fifty-two billion, one hundred seventy-one million, five hundred eighty-five thousand, two hundred forty-five".