195804051 has 4 divisors (see below), whose sum is σ = 261072072. Its totient is φ = 130536032.

The previous prime is 195804047. The next prime is 195804053. The reversal of 195804051 is 150408591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150408591 = 3 ⋅50136197.

It is a cyclic number.

It is not a de Polignac number, because 195804051 - 2² = 195804047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195804053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32634006 + ... + 32634011.

It is an arithmetic number, because the mean of its divisors is an integer number (65268018).

Almost surely, 2^195804051 is an apocalyptic number.

195804051 is a deficient number, since it is larger than the sum of its proper divisors (65268021).

195804051 is an equidigital number, since it uses as much as digits as its factorization.

195804051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65268020.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 195804051 is about 13993.0000714643. Note that the first 4 decimals coincide. The cubic root of 195804051 is about 580.6849330032.

The spelling of 195804051 in words is "one hundred ninety-five million, eight hundred four thousand, fifty-one".