22153457 has 2 divisors, whose sum is σ = 22153458. Its totient is φ = 22153456.

The previous prime is 22153451. The next prime is 22153501. The reversal of 22153457 is 75435122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18800896 + 3352561 = 4336^2 + 1831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22153457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22153451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11076728 + 11076729.

It is an arithmetic number, because the mean of its divisors is an integer number (11076729).

Almost surely, 2^22153457 is an apocalyptic number.

It is an amenable number.

22153457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22153457 is an equidigital number, since it uses as much as digits as its factorization.

22153457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 29.

The square root of 22153457 is about 4706.7459034879. The cubic root of 22153457 is about 280.8539279560.

Adding to 22153457 its reverse (75435122), we get a palindrome (97588579).

The spelling of 22153457 in words is "twenty-two million, one hundred fifty-three thousand, four hundred fifty-seven".