805497053 has 4 divisors (see below), whose sum is σ = 840518688. Its totient is φ = 770475420.

The previous prime is 805497047. The next prime is 805497061. The reversal of 805497053 is 350794508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 805497053 - 2⁴ = 805497037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 805497053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805497023) 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 in 3 ways as a sum of consecutive naturals, for example, 17510783 + ... + 17510828.

It is an arithmetic number, because the mean of its divisors is an integer number (210129672).

Almost surely, 2^805497053 is an apocalyptic number.

It is an amenable number.

805497053 is a deficient number, since it is larger than the sum of its proper divisors (35021635).

805497053 is a wasteful number, since it uses less digits than its factorization.

805497053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35021634.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 805497053 is about 28381.2799746594. The cubic root of 805497053 is about 930.4391701572.

The spelling of 805497053 in words is "eight hundred five million, four hundred ninety-seven thousand, fifty-three".