1251133 has 8 divisors (see below), whose sum is σ = 1358168. Its totient is φ = 1145664.

The previous prime is 1251121. The next prime is 1251157. The reversal of 1251133 is 3311521.

It can be written as a sum of positive squares in 4 ways, for example, as 91204 + 1159929 = 302^2 + 1077^2 .

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

It is not a de Polignac number, because 1251133 - 2⁵ = 1251101 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 (1251433) 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, 1735 + ... + 2347.

It is an arithmetic number, because the mean of its divisors is an integer number (169771).

2^1251133 is an apocalyptic number.

1251133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1251133 is a deficient number, since it is larger than the sum of its proper divisors (107035).

1251133 is a wasteful number, since it uses less digits than its factorization.

1251133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

The product of its digits is 90, while the sum is 16.

The square root of 1251133 is about 1118.5405669890. The cubic root of 1251133 is about 107.7542709999.

Adding to 1251133 its reverse (3311521), we get a palindrome (4562654).

It can be divided in two parts, 12511 and 33, that added together give a square (12544 = 112²).

The spelling of 1251133 in words is "one million, two hundred fifty-one thousand, one hundred thirty-three".