20514245 has 8 divisors (see below), whose sum is σ = 24652320. Its totient is φ = 16387920.

The previous prime is 20514191. The next prime is 20514251. The reversal of 20514245 is 54241502.

It is a happy number.

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

It is not a de Polignac number, because 20514245 - 2⁸ = 20513989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20514245.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1526 + ... + 6584.

It is an arithmetic number, because the mean of its divisors is an integer number (3081540).

Almost surely, 2^20514245 is an apocalyptic number.

It is an amenable number.

20514245 is a deficient number, since it is larger than the sum of its proper divisors (4138075).

20514245 is an equidigital number, since it uses as much as digits as its factorization.

20514245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5875.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 20514245 is about 4529.2653929749. The cubic root of 20514245 is about 273.7485616710.

Adding to 20514245 its reverse (54241502), we get a palindrome (74755747).

The spelling of 20514245 in words is "twenty million, five hundred fourteen thousand, two hundred forty-five".