5161660 has 72 divisors (see below), whose sum is σ = 13214880. Its totient is φ = 1685376.

The previous prime is 5161643. The next prime is 5161669. The reversal of 5161660 is 661615.

It is an Ulam number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161669) 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, 22426 + ... + 22654.

It is an arithmetic number, because the mean of its divisors is an integer number (183540).

Almost surely, 2^5161660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5161660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6607440).

5161660 is an abundant number, since it is smaller than the sum of its proper divisors (8053220).

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

5161660 is a wasteful number, since it uses less digits than its factorization.

5161660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 5161660 is about 2271.9286960642. The cubic root of 5161660 is about 172.8209804630.

The spelling of 5161660 in words is "five million, one hundred sixty-one thousand, six hundred sixty".