1091459053 has 4 divisors (see below), whose sum is σ = 1092455100. Its totient is φ = 1090463008.

The previous prime is 1091459021. The next prime is 1091459063. The reversal of 1091459053 is 3509541901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 659359684 + 432099369 = 25678^2 + 20787^2 .

It is a cyclic number.

It is not a de Polignac number, because 1091459053 - 2⁵ = 1091459021 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 (1091459003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496378 + ... + 498571.

It is an arithmetic number, because the mean of its divisors is an integer number (273113775).

Almost surely, 2^1091459053 is an apocalyptic number.

It is an amenable number.

1091459053 is a deficient number, since it is larger than the sum of its proper divisors (996047).

1091459053 is an equidigital number, since it uses as much as digits as its factorization.

1091459053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996046.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 1091459053 is about 33037.2373693685. The cubic root of 1091459053 is about 1029.6014585925.

The spelling of 1091459053 in words is "one billion, ninety-one million, four hundred fifty-nine thousand, fifty-three".