201604501 has 16 divisors (see below), whose sum is σ = 238935040. Its totient is φ = 166458240.

The previous prime is 201604493. The next prime is 201604517. The reversal of 201604501 is 105406102.

It is a cyclic number.

It is not a de Polignac number, because 201604501 - 2³ = 201604493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201604531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47665 + ... + 51721.

It is an arithmetic number, because the mean of its divisors is an integer number (14933440).

Almost surely, 2^201604501 is an apocalyptic number.

It is an amenable number.

201604501 is a deficient number, since it is larger than the sum of its proper divisors (37330539).

201604501 is a wasteful number, since it uses less digits than its factorization.

201604501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 201604501 is about 14198.7499801919. The cubic root of 201604501 is about 586.3632472776.

The spelling of 201604501 in words is "two hundred one million, six hundred four thousand, five hundred one".