5251004161 has 16 divisors (see below), whose sum is σ = 6038645760. Its totient is φ = 4528964160.

The previous prime is 5251004137. The next prime is 5251004173. The reversal of 5251004161 is 1614001525.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5251004161 - 2¹⁹ = 5250479873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5251004261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212965 + ... + 236338.

It is an arithmetic number, because the mean of its divisors is an integer number (377415360).

Almost surely, 2^5251004161 is an apocalyptic number.

It is an amenable number.

5251004161 is a deficient number, since it is larger than the sum of its proper divisors (787641599).

5251004161 is a wasteful number, since it uses less digits than its factorization.

5251004161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449376.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 5251004161 is about 72463.8127688573. The cubic root of 5251004161 is about 1738.1241245980.

Adding to 5251004161 its reverse (1614001525), we get a palindrome (6865005686).

The spelling of 5251004161 in words is "five billion, two hundred fifty-one million, four thousand, one hundred sixty-one".