541657161 has 12 divisors (see below), whose sum is σ = 786718660. Its totient is φ = 359108640.

The previous prime is 541657133. The next prime is 541657177. The reversal of 541657161 is 161756145.

It is a happy number.

541657161 is a `hidden beast` number, since 541 + 6 + 57 + 1 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81812025 + 459845136 = 9045^2 + 21444^2 .

It is not a de Polignac number, because 541657161 - 2¹¹ = 541655113 is a prime.

It is a super-3 number, since 3×541657161³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541657661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164626 + ... + 167883.

Almost surely, 2^541657161 is an apocalyptic number.

It is an amenable number.

541657161 is a deficient number, since it is larger than the sum of its proper divisors (245061499).

541657161 is a wasteful number, since it uses less digits than its factorization.

541657161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332696 (or 332693 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 541657161 is about 23273.5291909070. The cubic root of 541657161 is about 815.1574393173.

The spelling of 541657161 in words is "five hundred forty-one million, six hundred fifty-seven thousand, one hundred sixty-one".