1133145251 has 16 divisors (see below), whose sum is σ = 1378802880. Its totient is φ = 909066240.

The previous prime is 1133145227. The next prime is 1133145253. The reversal of 1133145251 is 1525413311.

It is a cyclic number.

It is not a de Polignac number, because 1133145251 - 2¹⁰ = 1133144227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1133145251.

It is not an unprimeable number, because it can be changed into a prime (1133145253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4766 + ... + 47843.

It is an arithmetic number, because the mean of its divisors is an integer number (86175180).

Almost surely, 2^1133145251 is an apocalyptic number.

1133145251 is a deficient number, since it is larger than the sum of its proper divisors (245657629).

1133145251 is a wasteful number, since it uses less digits than its factorization.

1133145251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52814.

The product of its digits is 1800, while the sum is 26.

The square root of 1133145251 is about 33662.2229063976. Note that the first 3 decimals coincide. The cubic root of 1133145251 is about 1042.5459231745.

Adding to 1133145251 its reverse (1525413311), we get a palindrome (2658558562).

The spelling of 1133145251 in words is "one billion, one hundred thirty-three million, one hundred forty-five thousand, two hundred fifty-one".