11545621 has 4 divisors (see below), whose sum is σ = 11653632. Its totient is φ = 11437612.

The previous prime is 11545603. The next prime is 11545627. The reversal of 11545621 is 12654511.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 11545621 - 2⁹ = 11545109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11545627) 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, 53845 + ... + 54058.

It is an arithmetic number, because the mean of its divisors is an integer number (2913408).

Almost surely, 2^11545621 is an apocalyptic number.

It is an amenable number.

11545621 is a deficient number, since it is larger than the sum of its proper divisors (108011).

11545621 is a wasteful number, since it uses less digits than its factorization.

11545621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108010.

The product of its digits is 1200, while the sum is 25.

The square root of 11545621 is about 3397.8847832144. The cubic root of 11545621 is about 226.0159554872.

The spelling of 11545621 in words is "eleven million, five hundred forty-five thousand, six hundred twenty-one".