21574113 has 8 divisors (see below), whose sum is σ = 31380576. Its totient is φ = 13075200.

The previous prime is 21574087. The next prime is 21574129. The reversal of 21574113 is 31147512.

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

It is not a de Polignac number, because 21574113 - 2⁸ = 21573857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21574193) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 326848 + ... + 326913.

It is an arithmetic number, because the mean of its divisors is an integer number (3922572).

Almost surely, 2^21574113 is an apocalyptic number.

It is an amenable number.

21574113 is a deficient number, since it is larger than the sum of its proper divisors (9806463).

21574113 is a wasteful number, since it uses less digits than its factorization.

21574113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653775.

The product of its digits is 840, while the sum is 24.

The square root of 21574113 is about 4644.7941827383. The cubic root of 21574113 is about 278.3840292356.

The spelling of 21574113 in words is "twenty-one million, five hundred seventy-four thousand, one hundred thirteen".