5420324621 has 2 divisors, whose sum is σ = 5420324622. Its totient is φ = 5420324620.

The previous prime is 5420324563. The next prime is 5420324627. The reversal of 5420324621 is 1264230245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4260172900 + 1160151721 = 65270^2 + 34061^2 .

It is a cyclic number.

It is not a de Polignac number, because 5420324621 - 2¹⁸ = 5420062477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5420324627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710162310 + 2710162311.

It is an arithmetic number, because the mean of its divisors is an integer number (2710162311).

Almost surely, 2^5420324621 is an apocalyptic number.

It is an amenable number.

5420324621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5420324621 is an equidigital number, since it uses as much as digits as its factorization.

5420324621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 5420324621 is about 73622.8539313711. The cubic root of 5420324621 is about 1756.6089817113.

Adding to 5420324621 its reverse (1264230245), we get a palindrome (6684554866).

The spelling of 5420324621 in words is "five billion, four hundred twenty million, three hundred twenty-four thousand, six hundred twenty-one".