11504921 has 2 divisors, whose sum is σ = 11504922. Its totient is φ = 11504920.

The previous prime is 11504917. The next prime is 11504957. The reversal of 11504921 is 12940511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11485321 + 19600 = 3389^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 11504921 - 2² = 11504917 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11504981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752460 + 5752461.

It is an arithmetic number, because the mean of its divisors is an integer number (5752461).

Almost surely, 2^11504921 is an apocalyptic number.

It is an amenable number.

11504921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11504921 is an equidigital number, since it uses as much as digits as its factorization.

11504921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 11504921 is about 3391.8904758261. The cubic root of 11504921 is about 225.7500630563.

The spelling of 11504921 in words is "eleven million, five hundred four thousand, nine hundred twenty-one".