1224552253 has 4 divisors (see below), whose sum is σ = 1229071168. Its totient is φ = 1220033340.

The previous prime is 1224552229. The next prime is 1224552283. The reversal of 1224552253 is 3522554221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3522554221 = 2389 ⋅1474489.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224552253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224552283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2259051 + ... + 2259592.

It is an arithmetic number, because the mean of its divisors is an integer number (307267792).

Almost surely, 2^1224552253 is an apocalyptic number.

It is an amenable number.

1224552253 is a deficient number, since it is larger than the sum of its proper divisors (4518915).

1224552253 is an equidigital number, since it uses as much as digits as its factorization.

1224552253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518914.

The product of its digits is 24000, while the sum is 31.

The square root of 1224552253 is about 34993.6030296967. The cubic root of 1224552253 is about 1069.8571017716.

The spelling of 1224552253 in words is "one billion, two hundred twenty-four million, five hundred fifty-two thousand, two hundred fifty-three".