21941059 has 16 divisors (see below), whose sum is σ = 25698816. Its totient is φ = 18345600.

The previous prime is 21941053. The next prime is 21941113. The reversal of 21941059 is 95014912.

It is not a de Polignac number, because 21941059 - 2²¹ = 19843907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21941059.

It is not an unprimeable number, because it can be changed into a prime (21941053) 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 in 15 ways as a sum of consecutive naturals, for example, 64939 + ... + 65275.

It is an arithmetic number, because the mean of its divisors is an integer number (1606176).

Almost surely, 2^21941059 is an apocalyptic number.

21941059 is a deficient number, since it is larger than the sum of its proper divisors (3757757).

21941059 is a wasteful number, since it uses less digits than its factorization.

21941059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 21941059 is about 4684.1284141236. The cubic root of 21941059 is about 279.9534744125.

The spelling of 21941059 in words is "twenty-one million, nine hundred forty-one thousand, fifty-nine".