21580883 has 8 divisors (see below), whose sum is σ = 22623216. Its totient is φ = 20563200.

The previous prime is 21580873. The next prime is 21580891. The reversal of 21580883 is 38808512.

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

It is a cyclic number.

It is not a de Polignac number, because 21580883 - 2¹² = 21576787 is a prime.

It is a super-2 number, since 2×21580883² = 931469022119378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21580813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4358 + ... + 7883.

It is an arithmetic number, because the mean of its divisors is an integer number (2827902).

Almost surely, 2^21580883 is an apocalyptic number.

21580883 is a deficient number, since it is larger than the sum of its proper divisors (1042333).

21580883 is a wasteful number, since it uses less digits than its factorization.

21580883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12325.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 21580883 is about 4645.5228984475. The cubic root of 21580883 is about 278.4131453461.

The spelling of 21580883 in words is "twenty-one million, five hundred eighty thousand, eight hundred eighty-three".