11552921 has 4 divisors (see below), whose sum is σ = 11598132. Its totient is φ = 11507712.

The previous prime is 11552903. The next prime is 11552927. The reversal of 11552921 is 12925511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12925511 = 2699 ⋅4789.

It can be written as a sum of positive squares in 2 ways, for example, as 11485321 + 67600 = 3389^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 11552921 - 2¹⁴ = 11536537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11552927) 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, 22220 + ... + 22733.

It is an arithmetic number, because the mean of its divisors is an integer number (2899533).

Almost surely, 2^11552921 is an apocalyptic number.

It is an amenable number.

11552921 is a deficient number, since it is larger than the sum of its proper divisors (45211).

11552921 is an equidigital number, since it uses as much as digits as its factorization.

11552921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45210.

The product of its digits is 900, while the sum is 26.

The square root of 11552921 is about 3398.9588111656. The cubic root of 11552921 is about 226.0635801484.

The spelling of 11552921 in words is "eleven million, five hundred fifty-two thousand, nine hundred twenty-one".