11895521 has 8 divisors (see below), whose sum is σ = 13197600. Its totient is φ = 10630240.

The previous prime is 11895517. The next prime is 11895523. The reversal of 11895521 is 12559811.

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

It is a cyclic number.

It is not a de Polignac number, because 11895521 - 2² = 11895517 is a prime.

It is a super-2 number, since 2×11895521² = 283006839722882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11895523) 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, 8516 + ... + 9813.

It is an arithmetic number, because the mean of its divisors is an integer number (1649700).

Almost surely, 2^11895521 is an apocalyptic number.

11895521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11895521 is a deficient number, since it is larger than the sum of its proper divisors (1302079).

11895521 is a wasteful number, since it uses less digits than its factorization.

11895521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18399.

The product of its digits is 3600, while the sum is 32.

The square root of 11895521 is about 3448.9884024160. The cubic root of 11895521 is about 228.2764741415.

The spelling of 11895521 in words is "eleven million, eight hundred ninety-five thousand, five hundred twenty-one".