22075591 has 2 divisors, whose sum is σ = 22075592. Its totient is φ = 22075590.

The previous prime is 22075553. The next prime is 22075597. The reversal of 22075591 is 19557022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22075591 - 2¹¹ = 22073543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22075597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11037795 + 11037796.

It is an arithmetic number, because the mean of its divisors is an integer number (11037796).

Almost surely, 2^22075591 is an apocalyptic number.

22075591 is a deficient number, since it is larger than the sum of its proper divisors (1).

22075591 is an equidigital number, since it uses as much as digits as its factorization.

22075591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 22075591 is about 4698.4668776102. The cubic root of 22075591 is about 280.5244888662.

Subtracting from 22075591 its reverse (19557022), we obtain a square (2518569 = 1587²).

The spelling of 22075591 in words is "twenty-two million, seventy-five thousand, five hundred ninety-one".