195972501 has 8 divisors (see below), whose sum is σ = 262741024. Its totient is φ = 129926160.

The previous prime is 195972493. The next prime is 195972527. The reversal of 195972501 is 105279591.

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

It is not a de Polignac number, because 195972501 - 2³ = 195972493 is a prime.

It is a super-2 number, since 2×195972501² = 76810442296390002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195972501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195972541) 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, 179911 + ... + 180996.

It is an arithmetic number, because the mean of its divisors is an integer number (32842628).

Almost surely, 2^195972501 is an apocalyptic number.

It is an amenable number.

195972501 is a deficient number, since it is larger than the sum of its proper divisors (66768523).

195972501 is a wasteful number, since it uses less digits than its factorization.

195972501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361091.

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 195972501 is about 13999.0178584071. The cubic root of 195972501 is about 580.8514061336.

The spelling of 195972501 in words is "one hundred ninety-five million, nine hundred seventy-two thousand, five hundred one".