21076933 has 2 divisors, whose sum is σ = 21076934. Its totient is φ = 21076932.

The previous prime is 21076921. The next prime is 21076943. The reversal of 21076933 is 33967012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17164449 + 3912484 = 4143^2 + 1978^2 .

It is a cyclic number.

It is not a de Polignac number, because 21076933 - 2¹³ = 21068741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21076895 and 21076904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21076943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10538466 + 10538467.

It is an arithmetic number, because the mean of its divisors is an integer number (10538467).

Almost surely, 2^21076933 is an apocalyptic number.

It is an amenable number.

21076933 is a deficient number, since it is larger than the sum of its proper divisors (1).

21076933 is an equidigital number, since it uses as much as digits as its factorization.

21076933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 21076933 is about 4590.9620996040. The cubic root of 21076933 is about 276.2289154891.

The spelling of 21076933 in words is "twenty-one million, seventy-six thousand, nine hundred thirty-three".