11870521 has 8 divisors (see below), whose sum is σ = 12810560. Its totient is φ = 10934352.

The previous prime is 11870503. The next prime is 11870587. The reversal of 11870521 is 12507811.

11870521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11870521 - 2⁷ = 11870393 is a prime.

It is a super-2 number, since 2×11870521² = 281818537622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11876521) 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 7 ways as a sum of consecutive naturals, for example, 10636 + ... + 11698.

It is an arithmetic number, because the mean of its divisors is an integer number (1601320).

Almost surely, 2^11870521 is an apocalyptic number.

It is an amenable number.

11870521 is a deficient number, since it is larger than the sum of its proper divisors (940039).

11870521 is a wasteful number, since it uses less digits than its factorization.

11870521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 11870521 is about 3445.3622451057. The cubic root of 11870521 is about 228.1164443154.

The spelling of 11870521 in words is "eleven million, eight hundred seventy thousand, five hundred twenty-one".