21474059 has 2 divisors, whose sum is σ = 21474060. Its totient is φ = 21474058.

The previous prime is 21474031. The next prime is 21474067. The reversal of 21474059 is 95047412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21474059 - 2²⁴ = 4696843 is a prime.

It is a super-2 number, since 2×21474059² = 922270419870962, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21474259) 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, 10737029 + 10737030.

It is an arithmetic number, because the mean of its divisors is an integer number (10737030).

Almost surely, 2^21474059 is an apocalyptic number.

21474059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21474059 is an equidigital number, since it uses as much as digits as its factorization.

21474059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 21474059 is about 4634.0111134955. The cubic root of 21474059 is about 277.9530094998.

The spelling of 21474059 in words is "twenty-one million, four hundred seventy-four thousand, fifty-nine".