813275 has 6 divisors (see below), whose sum is σ = 1008492. Its totient is φ = 650600.

The previous prime is 813269. The next prime is 813277. The reversal of 813275 is 572318.

It is a de Polignac number, because none of the positive numbers 2^k-813275 is a prime.

It is a super-2 number, since 2×813275² = 1322832451250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16241 + ... + 16290.

It is an arithmetic number, because the mean of its divisors is an integer number (168082).

2⁸¹³²⁷⁵ is an apocalyptic number.

813275 is a deficient number, since it is larger than the sum of its proper divisors (195217).

813275 is a wasteful number, since it uses less digits than its factorization.

813275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32541 (or 32536 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 813275 is about 901.8176090541. The cubic root of 813275 is about 93.3424381707.

The spelling of 813275 in words is "eight hundred thirteen thousand, two hundred seventy-five".