11721253 has 2 divisors, whose sum is σ = 11721254. Its totient is φ = 11721252.

The previous prime is 11721239. The next prime is 11721257. The reversal of 11721253 is 35212711.

It is a happy number.

11721253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6066369 + 5654884 = 2463^2 + 2378^2 .

It is an emirp because it is prime and its reverse (35212711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11721253 - 2⁵ = 11721221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11721257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5860626 + 5860627.

It is an arithmetic number, because the mean of its divisors is an integer number (5860627).

Almost surely, 2^11721253 is an apocalyptic number.

It is an amenable number.

11721253 is a deficient number, since it is larger than the sum of its proper divisors (1).

11721253 is an equidigital number, since it uses as much as digits as its factorization.

11721253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 22.

The square root of 11721253 is about 3423.6315514377. The cubic root of 11721253 is about 227.1562445185.

Adding to 11721253 its reverse (35212711), we get a palindrome (46933964).

The spelling of 11721253 in words is "eleven million, seven hundred twenty-one thousand, two hundred fifty-three".