5421215491 has 2 divisors, whose sum is σ = 5421215492. Its totient is φ = 5421215490.

The previous prime is 5421215479. The next prime is 5421215557. The reversal of 5421215491 is 1945121245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5421215491 - 2¹⁷ = 5421084419 is a prime.

It is not a weakly prime, because it can be changed into another prime (5421215291) 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, 2710607745 + 2710607746.

It is an arithmetic number, because the mean of its divisors is an integer number (2710607746).

Almost surely, 2^5421215491 is an apocalyptic number.

5421215491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5421215491 is an equidigital number, since it uses as much as digits as its factorization.

5421215491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 34.

The square root of 5421215491 is about 73628.9039100814. The cubic root of 5421215491 is about 1756.7052136178.

The spelling of 5421215491 in words is "five billion, four hundred twenty-one million, two hundred fifteen thousand, four hundred ninety-one".