5221243545 has 32 divisors (see below), whose sum is σ = 9564976128. Its totient is φ = 2382464448.

The previous prime is 5221243543. The next prime is 5221243561. The reversal of 5221243545 is 5453421225.

It is a happy number.

It is not a de Polignac number, because 5221243545 - 2¹ = 5221243543 is a prime.

It is a super-2 number, since 2×5221243545² = 54522768312408334050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5221243543) 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 31 ways as a sum of consecutive naturals, for example, 11982 + ... + 102888.

It is an arithmetic number, because the mean of its divisors is an integer number (298905504).

Almost surely, 2^5221243545 is an apocalyptic number.

It is an amenable number.

5221243545 is a deficient number, since it is larger than the sum of its proper divisors (4343732583).

5221243545 is a wasteful number, since it uses less digits than its factorization.

5221243545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91469.

The product of its digits is 48000, while the sum is 33.

The square root of 5221243545 is about 72258.1728595458. The cubic root of 5221243545 is about 1734.8342346481.

The spelling of 5221243545 in words is "five billion, two hundred twenty-one million, two hundred forty-three thousand, five hundred forty-five".