20514223 has 8 divisors (see below), whose sum is σ = 22470480. Its totient is φ = 18641280.

The previous prime is 20514191. The next prime is 20514251. The reversal of 20514223 is 32241502.

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 20514223 - 2⁵ = 20514191 is a prime.

It is a super-4 number, since 4×20514223⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20514223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20514253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20313 + ... + 21298.

It is an arithmetic number, because the mean of its divisors is an integer number (2808810).

Almost surely, 2^20514223 is an apocalyptic number.

20514223 is a deficient number, since it is larger than the sum of its proper divisors (1956257).

20514223 is a wasteful number, since it uses less digits than its factorization.

20514223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41657.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20514223 is about 4529.2629643243. The cubic root of 20514223 is about 273.7484638127.

Adding to 20514223 its reverse (32241502), we get a palindrome (52755725).

The spelling of 20514223 in words is "twenty million, five hundred fourteen thousand, two hundred twenty-three".