11642521 has 8 divisors (see below), whose sum is σ = 12909888. Its totient is φ = 10410000.

The previous prime is 11642513. The next prime is 11642537. The reversal of 11642521 is 12524611.

11642521 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 11642521 - 2³ = 11642513 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 11642492 and 11642501.

It is not an unprimeable number, because it can be changed into a prime (11642591) 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, 8005 + ... + 9346.

It is an arithmetic number, because the mean of its divisors is an integer number (1613736).

Almost surely, 2^11642521 is an apocalyptic number.

11642521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11642521 is a deficient number, since it is larger than the sum of its proper divisors (1267367).

11642521 is a wasteful number, since it uses less digits than its factorization.

11642521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17423.

The product of its digits is 480, while the sum is 22.

The square root of 11642521 is about 3412.1138609372. The cubic root of 11642521 is about 226.6464964270.

The spelling of 11642521 in words is "eleven million, six hundred forty-two thousand, five hundred twenty-one".