21482827 has 2 divisors, whose sum is σ = 21482828. Its totient is φ = 21482826.

The previous prime is 21482809. The next prime is 21482837. The reversal of 21482827 is 72828412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21482827 - 2²³ = 13094219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21482792 and 21482801.

It is not a weakly prime, because it can be changed into another prime (21482837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10741413 + 10741414.

It is an arithmetic number, because the mean of its divisors is an integer number (10741414).

Almost surely, 2^21482827 is an apocalyptic number.

21482827 is a deficient number, since it is larger than the sum of its proper divisors (1).

21482827 is an equidigital number, since it uses as much as digits as its factorization.

21482827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 34.

The square root of 21482827 is about 4634.9570656048. The cubic root of 21482827 is about 277.9908343682.

The spelling of 21482827 in words is "twenty-one million, four hundred eighty-two thousand, eight hundred twenty-seven".