11761521 has 8 divisors (see below), whose sum is σ = 15707904. Its totient is φ = 7828080.

The previous prime is 11761517. The next prime is 11761531. The reversal of 11761521 is 12516711.

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

It is not a de Polignac number, because 11761521 - 2² = 11761517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11761491 and 11761500.

It is not an unprimeable number, because it can be changed into a prime (11761531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865 + ... + 4926.

It is an arithmetic number, because the mean of its divisors is an integer number (1963488).

Almost surely, 2^11761521 is an apocalyptic number.

It is an amenable number.

11761521 is a deficient number, since it is larger than the sum of its proper divisors (3946383).

11761521 is an equidigital number, since it uses as much as digits as its factorization.

11761521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6471.

The product of its digits is 420, while the sum is 24.

The square root of 11761521 is about 3429.5073990298. The cubic root of 11761521 is about 227.4160766004.

The spelling of 11761521 in words is "eleven million, seven hundred sixty-one thousand, five hundred twenty-one".