5971621 has 2 divisors, whose sum is σ = 5971622. Its totient is φ = 5971620.

The previous prime is 5971591. The next prime is 5971627. The reversal of 5971621 is 1261795.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4730625 + 1240996 = 2175^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 5971621 - 2¹¹ = 5969573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5971627) 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, 2985810 + 2985811.

It is an arithmetic number, because the mean of its divisors is an integer number (2985811).

Almost surely, 2^5971621 is an apocalyptic number.

It is an amenable number.

5971621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5971621 is an equidigital number, since it uses as much as digits as its factorization.

5971621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 5971621 is about 2443.6900376275. The cubic root of 5971621 is about 181.4251171588.

The spelling of 5971621 in words is "five million, nine hundred seventy-one thousand, six hundred twenty-one".