1223533 has 2 divisors, whose sum is σ = 1223534. Its totient is φ = 1223532.

The previous prime is 1223527. The next prime is 1223549. The reversal of 1223533 is 3353221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996004 + 227529 = 998^2 + 477^2 .

It is an emirp because it is prime and its reverse (3353221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223533 - 2⁹ = 1223021 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611766 + 611767.

It is an arithmetic number, because the mean of its divisors is an integer number (611767).

2^1223533 is an apocalyptic number.

It is an amenable number.

1223533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223533 is an equidigital number, since it uses as much as digits as its factorization.

1223533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 19.

The square root of 1223533 is about 1106.1342594821. The cubic root of 1223533 is about 106.9560188419.

Adding to 1223533 its reverse (3353221), we get a palindrome (4576754).

It can be divided in two parts, 122 and 3533, that added together give a triangular number (3655 = T₈₅).

The spelling of 1223533 in words is "one million, two hundred twenty-three thousand, five hundred thirty-three".