20053516 has 24 divisors (see below), whose sum is σ = 41852160. Its totient is φ = 8220432.

The previous prime is 20053513. The next prime is 20053541. The reversal of 20053516 is 61535002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20053513) 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, 14926 + ... + 16213.

It is an arithmetic number, because the mean of its divisors is an integer number (1743840).

Almost surely, 2^20053516 is an apocalyptic number.

It is an amenable number.

20053516 is an abundant number, since it is smaller than the sum of its proper divisors (21798644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20053516 is a wasteful number, since it uses less digits than its factorization.

20053516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31173 (or 31171 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 20053516 is about 4478.1152285309. The cubic root of 20053516 is about 271.6836539911.

Adding to 20053516 its reverse (61535002), we get a palindrome (81588518).

The spelling of 20053516 in words is "twenty million, fifty-three thousand, five hundred sixteen".