3559172121 has 6 divisors (see below), whose sum is σ = 5141026410. Its totient is φ = 2372781408.

The previous prime is 3559172083. The next prime is 3559172129. The reversal of 3559172121 is 1212719553.

3559172121 is a `hidden beast` number, since 355 + 91 + 7 + 212 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3287416896 + 271755225 = 57336^2 + 16485^2 .

It is not a de Polignac number, because 3559172121 - 2¹⁰ = 3559171097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3559172129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197731776 + ... + 197731793.

It is an arithmetic number, because the mean of its divisors is an integer number (856837735).

Almost surely, 2^3559172121 is an apocalyptic number.

It is an amenable number.

3559172121 is a deficient number, since it is larger than the sum of its proper divisors (1581854289).

3559172121 is a wasteful number, since it uses less digits than its factorization.

3559172121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395463575 (or 395463572 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 3559172121 is about 59658.7975155383. The cubic root of 3559172121 is about 1526.8029731264.

The spelling of 3559172121 in words is "three billion, five hundred fifty-nine million, one hundred seventy-two thousand, one hundred twenty-one".