1091252533 has 16 divisors (see below), whose sum is σ = 1275346944. Its totient is φ = 914261040.

The previous prime is 1091252527. The next prime is 1091252537. The reversal of 1091252533 is 3352521901.

It is a de Polignac number, because none of the positive numbers 2^k-1091252533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1091252495 and 1091252504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091252537) 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, 324366 + ... + 327712.

It is an arithmetic number, because the mean of its divisors is an integer number (79709184).

Almost surely, 2^1091252533 is an apocalyptic number.

It is an amenable number.

1091252533 is a deficient number, since it is larger than the sum of its proper divisors (184094411).

1091252533 is an equidigital number, since it uses as much as digits as its factorization.

1091252533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1091252533 is about 33034.1116574973. Note that the first 3 decimals coincide. The cubic root of 1091252533 is about 1029.5365159499.

The spelling of 1091252533 in words is "one billion, ninety-one million, two hundred fifty-two thousand, five hundred thirty-three".