1131253554 has 8 divisors (see below), whose sum is σ = 2262507120. Its totient is φ = 377084516.

The previous prime is 1131253553. The next prime is 1131253561. The reversal of 1131253554 is 4553521311.

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

1131253554 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1131253553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94271124 + ... + 94271135.

It is an arithmetic number, because the mean of its divisors is an integer number (282813390).

Almost surely, 2^1131253554 is an apocalyptic number.

1131253554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1131253554 is a wasteful number, since it uses less digits than its factorization.

1131253554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188542264.

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

The square root of 1131253554 is about 33634.1129509907. The cubic root of 1131253554 is about 1041.9654505241.

Adding to 1131253554 its reverse (4553521311), we get a palindrome (5684774865).

The spelling of 1131253554 in words is "one billion, one hundred thirty-one million, two hundred fifty-three thousand, five hundred fifty-four".