22079857 has 2 divisors, whose sum is σ = 22079858. Its totient is φ = 22079856.

The previous prime is 22079851. The next prime is 22079887. The reversal of 22079857 is 75897022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19633761 + 2446096 = 4431^2 + 1564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22079857 is a prime.

It is not a weakly prime, because it can be changed into another prime (22079851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11039928 + 11039929.

It is an arithmetic number, because the mean of its divisors is an integer number (11039929).

Almost surely, 2^22079857 is an apocalyptic number.

It is an amenable number.

22079857 is a deficient number, since it is larger than the sum of its proper divisors (1).

22079857 is an equidigital number, since it uses as much as digits as its factorization.

22079857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 22079857 is about 4698.9208335532. The cubic root of 22079857 is about 280.5425576975.

The spelling of 22079857 in words is "twenty-two million, seventy-nine thousand, eight hundred fifty-seven".