1223502453 has 6 divisors (see below), whose sum is σ = 1767281334. Its totient is φ = 815668296.

The previous prime is 1223502439. The next prime is 1223502481. The reversal of 1223502453 is 3542053221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1221712209 + 1790244 = 34953^2 + 1338^2 .

It is not a de Polignac number, because 1223502453 - 2¹⁸ = 1223240309 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223502433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67972350 + ... + 67972367.

It is an arithmetic number, because the mean of its divisors is an integer number (294546889).

Almost surely, 2^1223502453 is an apocalyptic number.

It is an amenable number.

1223502453 is a deficient number, since it is larger than the sum of its proper divisors (543778881).

1223502453 is a wasteful number, since it uses less digits than its factorization.

1223502453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135944723 (or 135944720 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1223502453 is about 34978.5999290995. The cubic root of 1223502453 is about 1069.5512873844.

Adding to 1223502453 its reverse (3542053221), we get a palindrome (4765555674).

The spelling of 1223502453 in words is "one billion, two hundred twenty-three million, five hundred two thousand, four hundred fifty-three".