21485059 has 8 divisors (see below), whose sum is σ = 23738400. Its totient is φ = 19341696.

The previous prime is 21485053. The next prime is 21485069. The reversal of 21485059 is 95058412.

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 21485059 - 2²³ = 13096451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21485053) 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, 27084 + ... + 27865.

It is an arithmetic number, because the mean of its divisors is an integer number (2967300).

Almost surely, 2^21485059 is an apocalyptic number.

21485059 is a deficient number, since it is larger than the sum of its proper divisors (2253341).

21485059 is a wasteful number, since it uses less digits than its factorization.

21485059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54989.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 21485059 is about 4635.1978382805. The cubic root of 21485059 is about 278.0004615005. Note that the first 3 decimals are identical.

The spelling of 21485059 in words is "twenty-one million, four hundred eighty-five thousand, fifty-nine".