811552 has 24 divisors (see below), whose sum is σ = 1826496. Its totient is φ = 347712.

The previous prime is 811523. The next prime is 811553. The reversal of 811552 is 255118.

It is a nialpdrome in base 16.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (811553) 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, 1588 + ... + 2035.

It is an arithmetic number, because the mean of its divisors is an integer number (76104).

2⁸¹¹⁵⁵² is an apocalyptic number.

It is an amenable number.

811552 is an abundant number, since it is smaller than the sum of its proper divisors (1014944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811552 is a wasteful number, since it uses less digits than its factorization.

811552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640 (or 3632 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 811552 is about 900.8618096023. The cubic root of 811552 is about 93.2764733036.

It can be divided in two parts, 8 and 11552, that multiplied together give a square (92416 = 304²).

The spelling of 811552 in words is "eight hundred eleven thousand, five hundred fifty-two".