11622521 has 4 divisors (see below), whose sum is σ = 12127872. Its totient is φ = 11117172.

The previous prime is 11622517. The next prime is 11622539. The reversal of 11622521 is 12522611.

11622521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12522611 = 2269 ⋅5519.

It is a cyclic number.

It is not a de Polignac number, because 11622521 - 2² = 11622517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11622493 and 11622502.

It is not an unprimeable number, because it can be changed into a prime (11622571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252641 + ... + 252686.

It is an arithmetic number, because the mean of its divisors is an integer number (3031968).

Almost surely, 2^11622521 is an apocalyptic number.

It is an amenable number.

11622521 is a deficient number, since it is larger than the sum of its proper divisors (505351).

11622521 is an equidigital number, since it uses as much as digits as its factorization.

11622521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505350.

The product of its digits is 240, while the sum is 20.

The square root of 11622521 is about 3409.1818666654. The cubic root of 11622521 is about 226.5166411598.

The spelling of 11622521 in words is "eleven million, six hundred twenty-two thousand, five hundred twenty-one".