5200971421 has 2 divisors, whose sum is σ = 5200971422. Its totient is φ = 5200971420.

The previous prime is 5200971407. The next prime is 5200971431. The reversal of 5200971421 is 1241790025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4800411225 + 400560196 = 69285^2 + 20014^2 .

It is a cyclic number.

It is not a de Polignac number, because 5200971421 - 2¹⁵ = 5200938653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5200971431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600485710 + 2600485711.

It is an arithmetic number, because the mean of its divisors is an integer number (2600485711).

Almost surely, 2^5200971421 is an apocalyptic number.

It is an amenable number.

5200971421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5200971421 is an equidigital number, since it uses as much as digits as its factorization.

5200971421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 5200971421 is about 72117.7607874787. The cubic root of 5200971421 is about 1732.5860863823.

The spelling of 5200971421 in words is "five billion, two hundred million, nine hundred seventy-one thousand, four hundred twenty-one".