20036554 has 4 divisors (see below), whose sum is σ = 30054834. Its totient is φ = 10018276.

The previous prime is 20036531. The next prime is 20036561. The reversal of 20036554 is 45563002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 1760929 = 4275^2 + 1327^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5009137 + ... + 5009140.

Almost surely, 2^20036554 is an apocalyptic number.

20036554 is a deficient number, since it is larger than the sum of its proper divisors (10018280).

20036554 is a wasteful number, since it uses less digits than its factorization.

20036554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10018279.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20036554 is about 4476.2209507575. The cubic root of 20036554 is about 271.6070323812.

Adding to 20036554 its reverse (45563002), we get a palindrome (65599556).

The spelling of 20036554 in words is "twenty million, thirty-six thousand, five hundred fifty-four".