1154133523 has 4 divisors (see below), whose sum is σ = 1164347208. Its totient is φ = 1143919840.

The previous prime is 1154133517. The next prime is 1154133557. The reversal of 1154133523 is 3253314511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1154133523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1154133491 and 1154133500.

It is not an unprimeable number, because it can be changed into a prime (1154133593) 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, 5106673 + ... + 5106898.

It is an arithmetic number, because the mean of its divisors is an integer number (291086802).

Almost surely, 2^1154133523 is an apocalyptic number.

1154133523 is a deficient number, since it is larger than the sum of its proper divisors (10213685).

1154133523 is a wasteful number, since it uses less digits than its factorization.

1154133523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10213684.

The product of its digits is 5400, while the sum is 28.

The square root of 1154133523 is about 33972.5407204112. The cubic root of 1154133523 is about 1048.9433127522.

The spelling of 1154133523 in words is "one billion, one hundred fifty-four million, one hundred thirty-three thousand, five hundred twenty-three".