5217532561 has 4 divisors (see below), whose sum is σ = 5240929792. Its totient is φ = 5194135332.

The previous prime is 5217532547. The next prime is 5217532627. The reversal of 5217532561 is 1652357125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5217532561 - 2¹³ = 5217524369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5217532561.

It is not an unprimeable number, because it can be changed into a prime (5217532501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11698281 + ... + 11698726.

It is an arithmetic number, because the mean of its divisors is an integer number (1310232448).

Almost surely, 2^5217532561 is an apocalyptic number.

It is an amenable number.

5217532561 is a deficient number, since it is larger than the sum of its proper divisors (23397231).

5217532561 is a wasteful number, since it uses less digits than its factorization.

5217532561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23397230.

The product of its digits is 63000, while the sum is 37.

The square root of 5217532561 is about 72232.4896497414. The cubic root of 5217532561 is about 1734.4231277356.

Adding to 5217532561 its reverse (1652357125), we get a palindrome (6869889686).

The spelling of 5217532561 in words is "five billion, two hundred seventeen million, five hundred thirty-two thousand, five hundred sixty-one".