21795058 has 4 divisors (see below), whose sum is σ = 32692590. Its totient is φ = 10897528.

The previous prime is 21795043. The next prime is 21795079. The reversal of 21795058 is 85059712.

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

It can be written as a sum of positive squares in only one way, i.e., 13344409 + 8450649 = 3653^2 + 2907^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5448763 + ... + 5448766.

Almost surely, 2^21795058 is an apocalyptic number.

21795058 is a deficient number, since it is larger than the sum of its proper divisors (10897532).

21795058 is a wasteful number, since it uses less digits than its factorization.

21795058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10897531.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 21795058 is about 4668.5177519208. The cubic root of 21795058 is about 279.3311330678.

The spelling of 21795058 in words is "twenty-one million, seven hundred ninety-five thousand, fifty-eight".