201004405 has 32 divisors (see below), whose sum is σ = 281829888. Its totient is φ = 134784000.

The previous prime is 201004381. The next prime is 201004411. The reversal of 201004405 is 504400102.

It is a de Polignac number, because none of the positive numbers 2^k-201004405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385545 + ... + 386065.

It is an arithmetic number, because the mean of its divisors is an integer number (8807184).

Almost surely, 2^201004405 is an apocalyptic number.

It is an amenable number.

201004405 is a deficient number, since it is larger than the sum of its proper divisors (80825483).

201004405 is a wasteful number, since it uses less digits than its factorization.

201004405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 201004405 is about 14177.6022302786. The cubic root of 201004405 is about 585.7808794144.

Adding to 201004405 its reverse (504400102), we get a palindrome (705404507).

The spelling of 201004405 in words is "two hundred one million, four thousand, four hundred five".