4222591 has 2 divisors, whose sum is σ = 4222592. Its totient is φ = 4222590.

The previous prime is 4222577. The next prime is 4222597. The reversal of 4222591 is 1952224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4222591 - 2¹¹ = 4220543 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4222597) 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, 2111295 + 2111296.

It is an arithmetic number, because the mean of its divisors is an integer number (2111296).

Almost surely, 2^4222591 is an apocalyptic number.

4222591 is a deficient number, since it is larger than the sum of its proper divisors (1).

4222591 is an equidigital number, since it uses as much as digits as its factorization.

4222591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 4222591 is about 2054.8944011798. The cubic root of 4222591 is about 161.6316250028.

The spelling of 4222591 in words is "four million, two hundred twenty-two thousand, five hundred ninety-one".