553681161 has 24 divisors (see below), whose sum is σ = 873265536. Its totient is φ = 335257440.

The previous prime is 553681157. The next prime is 553681187. The reversal of 553681161 is 161186355.

553681161 is a `hidden beast` number, since 5 + 536 + 8 + 116 + 1 = 666.

It is not a de Polignac number, because 553681161 - 2² = 553681157 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (553681361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154951 + ... + 158483.

It is an arithmetic number, because the mean of its divisors is an integer number (36386064).

Almost surely, 2^553681161 is an apocalyptic number.

It is an amenable number.

553681161 is a deficient number, since it is larger than the sum of its proper divisors (319584375).

553681161 is a wasteful number, since it uses less digits than its factorization.

553681161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133 (or 5130 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 553681161 is about 23530.4305315479. The cubic root of 553681161 is about 821.1451188318.

The spelling of 553681161 in words is "five hundred fifty-three million, six hundred eighty-one thousand, one hundred sixty-one".