1153542253 has 4 divisors (see below), whose sum is σ = 1203696288. Its totient is φ = 1103388220.

The previous prime is 1153542241. The next prime is 1153542263. The reversal of 1153542253 is 3522453511.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1153542253 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 (1153542233) 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 3 ways as a sum of consecutive naturals, for example, 25076983 + ... + 25077028.

It is an arithmetic number, because the mean of its divisors is an integer number (300924072).

Almost surely, 2^1153542253 is an apocalyptic number.

It is an amenable number.

1153542253 is a deficient number, since it is larger than the sum of its proper divisors (50154035).

1153542253 is an equidigital number, since it uses as much as digits as its factorization.

1153542253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50154034.

The product of its digits is 18000, while the sum is 31.

The square root of 1153542253 is about 33963.8374304200. The cubic root of 1153542253 is about 1048.7641553605.

Adding to 1153542253 its reverse (3522453511), we get a palindrome (4675995764).

The spelling of 1153542253 in words is "one billion, one hundred fifty-three million, five hundred forty-two thousand, two hundred fifty-three".