221774053 has 2 divisors, whose sum is σ = 221774054. Its totient is φ = 221774052.

The previous prime is 221774011. The next prime is 221774089. The reversal of 221774053 is 350477122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148791204 + 72982849 = 12198^2 + 8543^2 .

It is a cyclic number.

It is not a de Polignac number, because 221774053 - 2¹³ = 221765861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221772053) 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, 110887026 + 110887027.

It is an arithmetic number, because the mean of its divisors is an integer number (110887027).

Almost surely, 2^221774053 is an apocalyptic number.

It is an amenable number.

221774053 is a deficient number, since it is larger than the sum of its proper divisors (1).

221774053 is an equidigital number, since it uses as much as digits as its factorization.

221774053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 221774053 is about 14892.0802106355. The cubic root of 221774053 is about 605.2994014747.

The spelling of 221774053 in words is "two hundred twenty-one million, seven hundred seventy-four thousand, fifty-three".