21675514 has 8 divisors (see below), whose sum is σ = 37158048. Its totient is φ = 9289500.

The previous prime is 21675491. The next prime is 21675529. The reversal of 21675514 is 41557612.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774112 + ... + 774139.

It is an arithmetic number, because the mean of its divisors is an integer number (4644756).

Almost surely, 2^21675514 is an apocalyptic number.

21675514 is a deficient number, since it is larger than the sum of its proper divisors (15482534).

21675514 is a wasteful number, since it uses less digits than its factorization.

21675514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548260.

The product of its digits is 8400, while the sum is 31.

The square root of 21675514 is about 4655.6969403087. The cubic root of 21675514 is about 278.8194941588.

The spelling of 21675514 in words is "twenty-one million, six hundred seventy-five thousand, five hundred fourteen".