1091255253 has 16 divisors (see below), whose sum is σ = 1670822400. Its totient is φ = 626557680.

The previous prime is 1091255251. The next prime is 1091255257. The reversal of 1091255253 is 3525521901.

It is not a de Polignac number, because 1091255253 - 2¹ = 1091255251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091255251) 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, 869593 + ... + 870846.

It is an arithmetic number, because the mean of its divisors is an integer number (104426400).

Almost surely, 2^1091255253 is an apocalyptic number.

It is an amenable number.

1091255253 is a deficient number, since it is larger than the sum of its proper divisors (579567147).

1091255253 is a wasteful number, since it uses less digits than its factorization.

1091255253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740472.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 1091255253 is about 33034.1528270364. The cubic root of 1091255253 is about 1029.5373713391.

The spelling of 1091255253 in words is "one billion, ninety-one million, two hundred fifty-five thousand, two hundred fifty-three".