21359059 has 8 divisors (see below), whose sum is σ = 22586000. Its totient is φ = 20142432.

The previous prime is 21359057. The next prime is 21359069. The reversal of 21359059 is 95095312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21359059 - 2¹ = 21359057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21359057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1897 + ... + 6805.

It is an arithmetic number, because the mean of its divisors is an integer number (2823250).

Almost surely, 2^21359059 is an apocalyptic number.

21359059 is a deficient number, since it is larger than the sum of its proper divisors (1226941).

21359059 is a wasteful number, since it uses less digits than its factorization.

21359059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5157.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 21359059 is about 4621.5861995640. The cubic root of 21359059 is about 277.4559473398.

The spelling of 21359059 in words is "twenty-one million, three hundred fifty-nine thousand, fifty-nine".