1253253443 has 8 divisors (see below), whose sum is σ = 1362272688. Its totient is φ = 1146036384.

The previous prime is 1253253439. The next prime is 1253253457. The reversal of 1253253443 is 3443523521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253253443 - 2² = 1253253439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253253403) 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 7 ways as a sum of consecutive naturals, for example, 449096 + ... + 451877.

It is an arithmetic number, because the mean of its divisors is an integer number (170284086).

Almost surely, 2^1253253443 is an apocalyptic number.

1253253443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1253253443 is a deficient number, since it is larger than the sum of its proper divisors (109019245).

1253253443 is a wasteful number, since it uses less digits than its factorization.

1253253443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901093.

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

The square root of 1253253443 is about 35401.3197917818. The cubic root of 1253253443 is about 1078.1511127560.

Adding to 1253253443 its reverse (3443523521), we get a palindrome (4696776964).

The spelling of 1253253443 in words is "one billion, two hundred fifty-three million, two hundred fifty-three thousand, four hundred forty-three".