801156 has 12 divisors (see below), whose sum is σ = 1869392. Its totient is φ = 267048.

The previous prime is 801137. The next prime is 801179. The reversal of 801156 is 651108.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

801156 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33370 + ... + 33393.

2⁸⁰¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

801156 is an abundant number, since it is smaller than the sum of its proper divisors (1068236).

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

801156 is a wasteful number, since it uses less digits than its factorization.

801156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66770 (or 66768 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 801156 is about 895.0731813656. The cubic root of 801156 is about 92.8764691247.

It can be divided in two parts, 80115 and 6, that multiplied together give a triangular number (480690 = T₉₈₀).

The spelling of 801156 in words is "eight hundred one thousand, one hundred fifty-six".