20214550 has 12 divisors (see below), whose sum is σ = 37599156. Its totient is φ = 8085800.

The previous prime is 20214541. The next prime is 20214553. The reversal of 20214550 is 5541202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202096 + ... + 202195.

It is an arithmetic number, because the mean of its divisors is an integer number (3133263).

Almost surely, 2^20214550 is an apocalyptic number.

20214550 is a deficient number, since it is larger than the sum of its proper divisors (17384606).

20214550 is a wasteful number, since it uses less digits than its factorization.

20214550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404303 (or 404298 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 20214550 is about 4496.0593857288. The cubic root of 20214550 is about 272.4089418843.

Adding to 20214550 its reverse (5541202), we get a palindrome (25755752).

It can be divided in two parts, 202 and 14550, that multiplied together give a triangular number (2939100 = T₂₄₂₄).

The spelling of 20214550 in words is "twenty million, two hundred fourteen thousand, five hundred fifty".