22615091 has 2 divisors, whose sum is σ = 22615092. Its totient is φ = 22615090.

The previous prime is 22615081. The next prime is 22615127. The reversal of 22615091 is 19051622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22615091 - 2¹⁸ = 22352947 is a prime.

It is a super-2 number, since 2×22615091² = 1022884681876562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22615091.

It is not a weakly prime, because it can be changed into another prime (22615051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11307545 + 11307546.

It is an arithmetic number, because the mean of its divisors is an integer number (11307546).

Almost surely, 2^22615091 is an apocalyptic number.

22615091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22615091 is an equidigital number, since it uses as much as digits as its factorization.

22615091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 22615091 is about 4755.5326725825. The cubic root of 22615091 is about 282.7913448213.

The spelling of 22615091 in words is "twenty-two million, six hundred fifteen thousand, ninety-one".