5250920813 has 4 divisors (see below), whose sum is σ = 5255734848. Its totient is φ = 5246106780.

The previous prime is 5250920803. The next prime is 5250920819. The reversal of 5250920813 is 3180290525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5250920813 - 2⁴ = 5250920797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5250920819) 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 3 ways as a sum of consecutive naturals, for example, 2405381 + ... + 2407562.

It is an arithmetic number, because the mean of its divisors is an integer number (1313933712).

Almost surely, 2^5250920813 is an apocalyptic number.

It is an amenable number.

5250920813 is a deficient number, since it is larger than the sum of its proper divisors (4814035).

5250920813 is a wasteful number, since it uses less digits than its factorization.

5250920813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814034.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 5250920813 is about 72463.2376657295. The cubic root of 5250920813 is about 1738.1149282658.

The spelling of 5250920813 in words is "five billion, two hundred fifty million, nine hundred twenty thousand, eight hundred thirteen".