21527314 has 4 divisors (see below), whose sum is σ = 32290974. Its totient is φ = 10763656.

The previous prime is 21527249. The next prime is 21527329. The reversal of 21527314 is 41372512.

It is a happy number.

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., 17783089 + 3744225 = 4217^2 + 1935^2 .

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, 5381827 + ... + 5381830.

Almost surely, 2^21527314 is an apocalyptic number.

21527314 is a deficient number, since it is larger than the sum of its proper divisors (10763660).

21527314 is a wasteful number, since it uses less digits than its factorization.

21527314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10763659.

The product of its digits is 1680, while the sum is 25.

The square root of 21527314 is about 4639.7536572538. The cubic root of 21527314 is about 278.1825914319.

Adding to 21527314 its reverse (41372512), we get a palindrome (62899826).

The spelling of 21527314 in words is "twenty-one million, five hundred twenty-seven thousand, three hundred fourteen".