22575757 has 2 divisors, whose sum is σ = 22575758. Its totient is φ = 22575756.

The previous prime is 22575739. The next prime is 22575797. The reversal of 22575757 is 75757522.

It is a happy number.

It is an a-pointer prime, because the next prime (22575797) can be obtained adding 22575757 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18224361 + 4351396 = 4269^2 + 2086^2 .

It is a cyclic number.

It is not a de Polignac number, because 22575757 - 2¹¹ = 22573709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22575727) 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, 11287878 + 11287879.

It is an arithmetic number, because the mean of its divisors is an integer number (11287879).

Almost surely, 2^22575757 is an apocalyptic number.

It is an amenable number.

22575757 is a deficient number, since it is larger than the sum of its proper divisors (1).

22575757 is an equidigital number, since it uses as much as digits as its factorization.

22575757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 171500, while the sum is 40.

The square root of 22575757 is about 4751.3952687605. The cubic root of 22575757 is about 282.6272984647.

It can be divided in two parts, 22575 and 757, that added together give a palindrome (23332).

The spelling of 22575757 in words is "twenty-two million, five hundred seventy-five thousand, seven hundred fifty-seven".