1160821 has 4 divisors (see below), whose sum is σ = 1164352. Its totient is φ = 1157292.

The previous prime is 1160813. The next prime is 1160837. The reversal of 1160821 is 1280611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1280611 = 29 ⋅44159.

It is a cyclic number.

It is not a de Polignac number, because 1160821 - 2³ = 1160813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1160221) 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, 1215 + ... + 1948.

It is an arithmetic number, because the mean of its divisors is an integer number (291088).

2^1160821 is an apocalyptic number.

It is an amenable number.

1160821 is a deficient number, since it is larger than the sum of its proper divisors (3531).

1160821 is an equidigital number, since it uses as much as digits as its factorization.

1160821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1160821 is about 1077.4140336936. The cubic root of 1160821 is about 105.0965400848.

The spelling of 1160821 in words is "one million, one hundred sixty thousand, eight hundred twenty-one".