5605851421 has 2 divisors, whose sum is σ = 5605851422. Its totient is φ = 5605851420.

The previous prime is 5605851397. The next prime is 5605851443. The reversal of 5605851421 is 1241585065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4870085796 + 735765625 = 69786^2 + 27125^2 .

It is a cyclic number.

It is not a de Polignac number, because 5605851421 - 2¹⁷ = 5605720349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5605851721) 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, 2802925710 + 2802925711.

It is an arithmetic number, because the mean of its divisors is an integer number (2802925711).

Almost surely, 2^5605851421 is an apocalyptic number.

It is an amenable number.

5605851421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5605851421 is an equidigital number, since it uses as much as digits as its factorization.

5605851421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 5605851421 is about 74872.2339789591. The cubic root of 5605851421 is about 1776.4263001024.

The spelling of 5605851421 in words is "five billion, six hundred five million, eight hundred fifty-one thousand, four hundred twenty-one".