20112550 has 24 divisors (see below), whose sum is σ = 38325672. Its totient is φ = 7848000.

The previous prime is 20112541. The next prime is 20112601. The reversal of 20112550 is 5521102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2856 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (1596903).

Almost surely, 2^20112550 is an apocalyptic number.

20112550 is a deficient number, since it is larger than the sum of its proper divisors (18213122).

20112550 is a wasteful number, since it uses less digits than its factorization.

20112550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9864 (or 9859 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 20112550 is about 4484.7017738084. The cubic root of 20112550 is about 271.9499890032.

Adding to 20112550 its reverse (5521102), we get a palindrome (25633652).

The spelling of 20112550 in words is "twenty million, one hundred twelve thousand, five hundred fifty".