5161639 has 8 divisors (see below), whose sum is σ = 5957120. Its totient is φ = 4380696.

The previous prime is 5161631. The next prime is 5161643. The reversal of 5161639 is 9361615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5161639 - 2³ = 5161631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5161639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161631) 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, 2859 + ... + 4300.

It is an arithmetic number, because the mean of its divisors is an integer number (744640).

Almost surely, 2^5161639 is an apocalyptic number.

5161639 is a deficient number, since it is larger than the sum of its proper divisors (795481).

5161639 is a wasteful number, since it uses less digits than its factorization.

5161639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269.

The product of its digits is 4860, while the sum is 31.

The square root of 5161639 is about 2271.9240744356. The cubic root of 5161639 is about 172.8207460910.

The spelling of 5161639 in words is "five million, one hundred sixty-one thousand, six hundred thirty-nine".