19222057 has 2 divisors, whose sum is σ = 19222058. Its totient is φ = 19222056.

The previous prime is 19222039. The next prime is 19222067. The reversal of 19222057 is 75022291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19219456 + 2601 = 4384^2 + 51^2 .

It is an emirp because it is prime and its reverse (75022291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19222057 - 2¹¹ = 19220009 is a prime.

It is a super-2 number, since 2×19222057² = 738974950622498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19222037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9611028 + 9611029.

It is an arithmetic number, because the mean of its divisors is an integer number (9611029).

Almost surely, 2^19222057 is an apocalyptic number.

It is an amenable number.

19222057 is a deficient number, since it is larger than the sum of its proper divisors (1).

19222057 is an equidigital number, since it uses as much as digits as its factorization.

19222057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 19222057 is about 4384.2966368621. The cubic root of 19222057 is about 267.8756802544.

The spelling of 19222057 in words is "nineteen million, two hundred twenty-two thousand, fifty-seven".