21514046 has 4 divisors (see below), whose sum is σ = 32271072. Its totient is φ = 10757022.

The previous prime is 21514037. The next prime is 21514067. The reversal of 21514046 is 64041512.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5378510 + ... + 5378513.

It is an arithmetic number, because the mean of its divisors is an integer number (8067768).

Almost surely, 2^21514046 is an apocalyptic number.

21514046 is a deficient number, since it is larger than the sum of its proper divisors (10757026).

21514046 is a wasteful number, since it uses less digits than its factorization.

21514046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10757025.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 21514046 is about 4638.3236195850. The cubic root of 21514046 is about 278.1254286237.

Adding to 21514046 its reverse (64041512), we get a palindrome (85555558).

The spelling of 21514046 in words is "twenty-one million, five hundred fourteen thousand, forty-six".