1253323544 has 64 divisors (see below), whose sum is σ = 2702004480. Its totient is φ = 539440000.

The previous prime is 1253323541. The next prime is 1253323553. The reversal of 1253323544 is 4453233521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253323544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253323541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201359 + ... + 207489.

It is an arithmetic number, because the mean of its divisors is an integer number (42218820).

Almost surely, 2^1253323544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253323544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351002240).

1253323544 is an abundant number, since it is smaller than the sum of its proper divisors (1448680936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253323544 is a wasteful number, since it uses less digits than its factorization.

1253323544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6272 (or 6268 counting only the distinct ones).

The product of its digits is 43200, while the sum is 32.

The square root of 1253323544 is about 35402.3098681428. The cubic root of 1253323544 is about 1078.1712145858.

The spelling of 1253323544 in words is "one billion, two hundred fifty-three million, three hundred twenty-three thousand, five hundred forty-four".