1133551 has 2 divisors, whose sum is σ = 1133552. Its totient is φ = 1133550.

The previous prime is 1133537. The next prime is 1133579. The reversal of 1133551 is 1553311.

It is a weak prime.

It is an emirp because it is prime and its reverse (1553311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1133551 - 2⁵ = 1133519 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1133501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566775 + 566776.

It is an arithmetic number, because the mean of its divisors is an integer number (566776).

2^1133551 is an apocalyptic number.

1133551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133551 is an equidigital number, since it uses as much as digits as its factorization.

1133551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225, while the sum is 19.

The square root of 1133551 is about 1064.6835210521. The cubic root of 1133551 is about 104.2670344260.

Adding to 1133551 its reverse (1553311), we get a palindrome (2686862).

The spelling of 1133551 in words is "one million, one hundred thirty-three thousand, five hundred fifty-one".