21363049 has 8 divisors (see below), whose sum is σ = 22652000. Its totient is φ = 20090592.

The previous prime is 21363047. The next prime is 21363059. The reversal of 21363049 is 94036312.

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

It is a cyclic number.

It is not a de Polignac number, because 21363049 - 2¹ = 21363047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21363047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1404 + ... + 6685.

It is an arithmetic number, because the mean of its divisors is an integer number (2831500).

Almost surely, 2^21363049 is an apocalyptic number.

It is an amenable number.

21363049 is a deficient number, since it is larger than the sum of its proper divisors (1288951).

21363049 is a wasteful number, since it uses less digits than its factorization.

21363049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8247.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 21363049 is about 4622.0178493814. The cubic root of 21363049 is about 277.4732230744.

The spelling of 21363049 in words is "twenty-one million, three hundred sixty-three thousand, forty-nine".