22029257 has 2 divisors, whose sum is σ = 22029258. Its totient is φ = 22029256.

The previous prime is 22029233. The next prime is 22029289. The reversal of 22029257 is 75292022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21939856 + 89401 = 4684^2 + 299^2 .

It is a cyclic number.

It is not a de Polignac number, because 22029257 - 2⁸ = 22029001 is a prime.

It is not a weakly prime, because it can be changed into another prime (22029157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11014628 + 11014629.

It is an arithmetic number, because the mean of its divisors is an integer number (11014629).

Almost surely, 2^22029257 is an apocalyptic number.

It is an amenable number.

22029257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22029257 is an equidigital number, since it uses as much as digits as its factorization.

22029257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 22029257 is about 4693.5335302946. The cubic root of 22029257 is about 280.3280890521.

The spelling of 22029257 in words is "twenty-two million, twenty-nine thousand, two hundred fifty-seven".