1170521 has 4 divisors (see below), whose sum is σ = 1276944. Its totient is φ = 1064100.

The previous prime is 1170517. The next prime is 1170523. The reversal of 1170521 is 1250711.

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.

It is a cyclic number.

It is not a de Polignac number, because 1170521 - 2² = 1170517 is a prime.

It is a super-2 number, since 2×1170521² = 2740238822882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1170521.

It is not an unprimeable number, because it can be changed into a prime (1170523) 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 3 ways as a sum of consecutive naturals, for example, 53195 + ... + 53216.

It is an arithmetic number, because the mean of its divisors is an integer number (319236).

2^1170521 is an apocalyptic number.

1170521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1170521 is a deficient number, since it is larger than the sum of its proper divisors (106423).

1170521 is a wasteful number, since it uses less digits than its factorization.

1170521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106422.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 1170521 is about 1081.9061881698. The cubic root of 1170521 is about 105.3884627915.

The spelling of 1170521 in words is "one million, one hundred seventy thousand, five hundred twenty-one".