21841058 has 4 divisors (see below), whose sum is σ = 32761590. Its totient is φ = 10920528.

The previous prime is 21841049. The next prime is 21841067. The reversal of 21841058 is 85014812.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21841049) and next prime (21841067).

It can be written as a sum of positive squares in only one way, i.e., 12581209 + 9259849 = 3547^2 + 3043^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21841058.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5460263 + ... + 5460266.

Almost surely, 2^21841058 is an apocalyptic number.

21841058 is a deficient number, since it is larger than the sum of its proper divisors (10920532).

21841058 is a wasteful number, since it uses less digits than its factorization.

21841058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920531.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 21841058 is about 4673.4417723986. The cubic root of 21841058 is about 279.5275109649.

The spelling of 21841058 in words is "twenty-one million, eight hundred forty-one thousand, fifty-eight".