991052 has 12 divisors (see below), whose sum is σ = 1776936. Its totient is φ = 483360.

The previous prime is 991043. The next prime is 991057. The reversal of 991052 is 250199.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 991052.

It is not an unprimeable number, because it can be changed into a prime (991057) 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, 2858 + ... + 3185.

It is an arithmetic number, because the mean of its divisors is an integer number (148078).

2⁹⁹¹⁰⁵² is an apocalyptic number.

It is an amenable number.

991052 is a deficient number, since it is larger than the sum of its proper divisors (785884).

991052 is a wasteful number, since it uses less digits than its factorization.

991052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088 (or 6086 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 991052 is about 995.5159466327. The cubic root of 991052 is about 99.7008392543.

The spelling of 991052 in words is "nine hundred ninety-one thousand, fifty-two".