22252157 has 2 divisors, whose sum is σ = 22252158. Its totient is φ = 22252156.

The previous prime is 22252151. The next prime is 22252163. The reversal of 22252157 is 75125222.

It is a balanced prime because it is at equal distance from previous prime (22252151) and next prime (22252163).

It can be written as a sum of positive squares in only one way, i.e., 19175641 + 3076516 = 4379^2 + 1754^2 .

It is a cyclic number.

It is not a de Polignac number, because 22252157 - 2¹⁸ = 21990013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22252151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11126078 + 11126079.

It is an arithmetic number, because the mean of its divisors is an integer number (11126079).

Almost surely, 2^22252157 is an apocalyptic number.

It is an amenable number.

22252157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22252157 is an equidigital number, since it uses as much as digits as its factorization.

22252157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 26.

The square root of 22252157 is about 4717.2192020299. The cubic root of 22252157 is about 281.2704049722.

Adding to 22252157 its reverse (75125222), we get a palindrome (97377379).

It can be divided in two parts, 2225215 and 7, that added together give a palindrome (2225222).

The spelling of 22252157 in words is "twenty-two million, two hundred fifty-two thousand, one hundred fifty-seven".