22031057 has 2 divisors, whose sum is σ = 22031058. Its totient is φ = 22031056.

The previous prime is 22031027. The next prime is 22031069. The reversal of 22031057 is 75013022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 1745041 = 4504^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031057 - 2⁶ = 22030993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22031017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015528 + 11015529.

It is an arithmetic number, because the mean of its divisors is an integer number (11015529).

Almost surely, 2^22031057 is an apocalyptic number.

It is an amenable number.

22031057 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031057 is an equidigital number, since it uses as much as digits as its factorization.

22031057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 22031057 is about 4693.7252795621. The cubic root of 22031057 is about 280.3357240019.

Adding to 22031057 its reverse (75013022), we get a palindrome (97044079).

The spelling of 22031057 in words is "twenty-two million, thirty-one thousand, fifty-seven".