21119053 has 2 divisors, whose sum is σ = 21119054. Its totient is φ = 21119052.

The previous prime is 21119039. The next prime is 21119057. The reversal of 21119053 is 35091112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12369289 + 8749764 = 3517^2 + 2958^2 .

It is a cyclic number.

It is not a de Polignac number, because 21119053 - 2¹³ = 21110861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21119057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10559526 + 10559527.

It is an arithmetic number, because the mean of its divisors is an integer number (10559527).

Almost surely, 2^21119053 is an apocalyptic number.

It is an amenable number.

21119053 is a deficient number, since it is larger than the sum of its proper divisors (1).

21119053 is an equidigital number, since it uses as much as digits as its factorization.

21119053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 21119053 is about 4595.5470838628. The cubic root of 21119053 is about 276.4127977177.

The spelling of 21119053 in words is "twenty-one million, one hundred nineteen thousand, fifty-three".