21483361 has 2 divisors, whose sum is σ = 21483362. Its totient is φ = 21483360.

The previous prime is 21483337. The next prime is 21483373. The reversal of 21483361 is 16338412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19633761 + 1849600 = 4431^2 + 1360^2 .

It is a cyclic number.

It is not a de Polignac number, because 21483361 - 2⁷ = 21483233 is a prime.

It is not a weakly prime, because it can be changed into another prime (21433361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10741680 + 10741681.

It is an arithmetic number, because the mean of its divisors is an integer number (10741681).

Almost surely, 2^21483361 is an apocalyptic number.

It is an amenable number.

21483361 is a deficient number, since it is larger than the sum of its proper divisors (1).

21483361 is an equidigital number, since it uses as much as digits as its factorization.

21483361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 21483361 is about 4635.0146709584. The cubic root of 21483361 is about 277.9931376944.

The spelling of 21483361 in words is "twenty-one million, four hundred eighty-three thousand, three hundred sixty-one".