20514505 has 16 divisors (see below), whose sum is σ = 28024704. Its totient is φ = 14270080.

The previous prime is 20514503. The next prime is 20514521. The reversal of 20514505 is 50541502.

It is not a de Polignac number, because 20514505 - 2¹ = 20514503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20514503) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6844 + ... + 9373.

It is an arithmetic number, because the mean of its divisors is an integer number (1751544).

Almost surely, 2^20514505 is an apocalyptic number.

It is an amenable number.

20514505 is a deficient number, since it is larger than the sum of its proper divisors (7510199).

20514505 is a wasteful number, since it uses less digits than its factorization.

20514505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16256.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 20514505 is about 4529.2940951102. The cubic root of 20514505 is about 273.7497181735.

It can be divided in two parts, 2051 and 4505, that added together give a palindrome (6556).

The spelling of 20514505 in words is "twenty million, five hundred fourteen thousand, five hundred five".