195772051 has 8 divisors (see below), whose sum is σ = 207519840. Its totient is φ = 184050048.

The previous prime is 195772043. The next prime is 195772079. The reversal of 195772051 is 150277591.

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 195772051 - 2³ = 195772043 is a prime.

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 195772051.

It is not an unprimeable number, because it can be changed into a prime (195772001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10485 + ... + 22393.

It is an arithmetic number, because the mean of its divisors is an integer number (25939980).

Almost surely, 2^195772051 is an apocalyptic number.

195772051 is a deficient number, since it is larger than the sum of its proper divisors (11747789).

195772051 is a wasteful number, since it uses less digits than its factorization.

195772051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12893.

The product of its (nonzero) digits is 22050, while the sum is 37.

The square root of 195772051 is about 13991.8565958918. The cubic root of 195772051 is about 580.6532977534.

The spelling of 195772051 in words is "one hundred ninety-five million, seven hundred seventy-two thousand, fifty-one".