1253533111 has 2 divisors, whose sum is σ = 1253533112. Its totient is φ = 1253533110.

The previous prime is 1253533109. The next prime is 1253533121. The reversal of 1253533111 is 1113353521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1253533111 - 2¹ = 1253533109 is a prime.

Together with 1253533109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253533121) 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 as a sum of consecutive naturals, namely, 626766555 + 626766556.

It is an arithmetic number, because the mean of its divisors is an integer number (626766556).

Almost surely, 2^1253533111 is an apocalyptic number.

1253533111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253533111 is an equidigital number, since it uses as much as digits as its factorization.

1253533111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 25.

The square root of 1253533111 is about 35405.2695371748. The cubic root of 1253533111 is about 1078.2313045537.

Adding to 1253533111 its reverse (1113353521), we get a palindrome (2366886632).

The spelling of 1253533111 in words is "one billion, two hundred fifty-three million, five hundred thirty-three thousand, one hundred eleven".