20550298 has 4 divisors (see below), whose sum is σ = 30825450. Its totient is φ = 10275148.

The previous prime is 20550289. The next prime is 20550301. The reversal of 20550298 is 89205502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89205502 = 2 ⋅44602751.

It can be written as a sum of positive squares in only one way, i.e., 20548089 + 2209 = 4533^2 + 47^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5137573 + ... + 5137576.

Almost surely, 2^20550298 is an apocalyptic number.

20550298 is a deficient number, since it is larger than the sum of its proper divisors (10275152).

20550298 is a wasteful number, since it uses less digits than its factorization.

20550298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275151.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 20550298 is about 4533.2436510737. The cubic root of 20550298 is about 273.9088353540.

The spelling of 20550298 in words is "twenty million, five hundred fifty thousand, two hundred ninety-eight".