195616501 has 8 divisors (see below), whose sum is σ = 208200024. Its totient is φ = 183152640.

The previous prime is 195616489. The next prime is 195616517. The reversal of 195616501 is 105616591.

It can be written as a sum of positive squares in 4 ways, for example, as 60824401 + 134792100 = 7799^2 + 11610^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195616501 - 2¹¹ = 195614453 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 (195616601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26530 + ... + 33091.

It is an arithmetic number, because the mean of its divisors is an integer number (26025003).

Almost surely, 2^195616501 is an apocalyptic number.

It is an amenable number.

195616501 is a deficient number, since it is larger than the sum of its proper divisors (12583523).

195616501 is a wasteful number, since it uses less digits than its factorization.

195616501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59831.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 195616501 is about 13986.2969008955. The cubic root of 195616501 is about 580.4994716550.

It can be divided in two parts, 19561 and 6501, that added together give a palindrome (26062).

The spelling of 195616501 in words is "one hundred ninety-five million, six hundred sixteen thousand, five hundred one".