5521161281 has 8 divisors (see below), whose sum is σ = 5848464384. Its totient is φ = 5194139200.

The previous prime is 5521161241. The next prime is 5521161313. The reversal of 5521161281 is 1821611255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5521161281 - 2¹⁰ = 5521160257 is a prime.

It is a super-2 number, since 2×5521161281² = 60966443781627121922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5521161241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29105 + ... + 109038.

It is an arithmetic number, because the mean of its divisors is an integer number (731058048).

Almost surely, 2^5521161281 is an apocalyptic number.

It is an amenable number.

5521161281 is a deficient number, since it is larger than the sum of its proper divisors (327303103).

5521161281 is a wasteful number, since it uses less digits than its factorization.

5521161281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140511.

The product of its digits is 4800, while the sum is 32.

The square root of 5521161281 is about 74304.5172314577. The cubic root of 5521161281 is about 1767.4351096615.

The spelling of 5521161281 in words is "five billion, five hundred twenty-one million, one hundred sixty-one thousand, two hundred eighty-one".