5161566 has 16 divisors (see below), whose sum is σ = 10356624. Its totient is φ = 1714944.

The previous prime is 5161561. The next prime is 5161567. The reversal of 5161566 is 6651615.

5161566 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×5161566³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900 + ... + 3336.

It is an arithmetic number, because the mean of its divisors is an integer number (647289).

Almost surely, 2^5161566 is an apocalyptic number.

5161566 is an abundant number, since it is smaller than the sum of its proper divisors (5195058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5161566 is a wasteful number, since it uses less digits than its factorization.

5161566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795.

The product of its digits is 5400, while the sum is 30.

The square root of 5161566 is about 2271.9080087011. The cubic root of 5161566 is about 172.8199313644.

It can be divided in two parts, 51615 and 66, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 5161566 in words is "five million, one hundred sixty-one thousand, five hundred sixty-six".