5172154806 has 128 divisors (see below), whose sum is σ = 13573324800. Its totient is φ = 1275730560.

The previous prime is 5172154789. The next prime is 5172154861. The reversal of 5172154806 is 6084512715.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 816391 + ... + 822701.

It is an arithmetic number, because the mean of its divisors is an integer number (106041600).

Almost surely, 2^5172154806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5172154806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6786662400).

5172154806 is an abundant number, since it is smaller than the sum of its proper divisors (8401169994).

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

5172154806 is a wasteful number, since it uses less digits than its factorization.

5172154806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6434.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 5172154806 is about 71917.6946654994. The cubic root of 5172154806 is about 1729.3802903617.

The spelling of 5172154806 in words is "five billion, one hundred seventy-two million, one hundred fifty-four thousand, eight hundred six".