1131545253 has 8 divisors (see below), whose sum is σ = 1512030208. Its totient is φ = 752711904.

The previous prime is 1131545249. The next prime is 1131545267. The reversal of 1131545253 is 3525451311.

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

It is not a de Polignac number, because 1131545253 - 2² = 1131545249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131545253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131545213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411301 + ... + 414042.

It is an arithmetic number, because the mean of its divisors is an integer number (189003776).

Almost surely, 2^1131545253 is an apocalyptic number.

It is an amenable number.

1131545253 is a deficient number, since it is larger than the sum of its proper divisors (380484955).

1131545253 is an equidigital number, since it uses as much as digits as its factorization.

1131545253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825803.

The product of its digits is 9000, while the sum is 30.

The square root of 1131545253 is about 33638.4490278610. The cubic root of 1131545253 is about 1042.0550013764.

Adding to 1131545253 its reverse (3525451311), we get a palindrome (4656996564).

The spelling of 1131545253 in words is "one billion, one hundred thirty-one million, five hundred forty-five thousand, two hundred fifty-three".