222505541 has 2 divisors, whose sum is σ = 222505542. Its totient is φ = 222505540.

The previous prime is 222505511. The next prime is 222505553. The reversal of 222505541 is 145505222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128822500 + 93683041 = 11350^2 + 9679^2 .

It is a cyclic number.

It is not a de Polignac number, because 222505541 - 2⁶ = 222505477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222505541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222505511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111252770 + 111252771.

It is an arithmetic number, because the mean of its divisors is an integer number (111252771).

Almost surely, 2^222505541 is an apocalyptic number.

It is an amenable number.

222505541 is a deficient number, since it is larger than the sum of its proper divisors (1).

222505541 is an equidigital number, since it uses as much as digits as its factorization.

222505541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 222505541 is about 14916.6196237619. The cubic root of 222505541 is about 605.9641671530.

The spelling of 222505541 in words is "two hundred twenty-two million, five hundred five thousand, five hundred forty-one".