201404506 has 4 divisors (see below), whose sum is σ = 302106762. Its totient is φ = 100702252.

The previous prime is 201404477. The next prime is 201404513. The reversal of 201404506 is 605404102.

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., 132365025 + 69039481 = 11505^2 + 8309^2 .

It is a Smith number, since the sum of its digits (22) 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, 50351125 + ... + 50351128.

Almost surely, 2^201404506 is an apocalyptic number.

201404506 is a deficient number, since it is larger than the sum of its proper divisors (100702256).

201404506 is a wasteful number, since it uses less digits than its factorization.

201404506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100702255.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 201404506 is about 14191.7055352766. The cubic root of 201404506 is about 586.1692891132.

Adding to 201404506 its reverse (605404102), we get a palindrome (806808608).

The spelling of 201404506 in words is "two hundred one million, four hundred four thousand, five hundred six".