195030051 has 4 divisors (see below), whose sum is σ = 260040072. Its totient is φ = 130020032.

The previous prime is 195030047. The next prime is 195030053. The reversal of 195030051 is 150030591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150030591 = 3 ⋅50010197.

It is a cyclic number.

It is not a de Polignac number, because 195030051 - 2² = 195030047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195030053) 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 3 ways as a sum of consecutive naturals, for example, 32505006 + ... + 32505011.

It is an arithmetic number, because the mean of its divisors is an integer number (65010018).

Almost surely, 2^195030051 is an apocalyptic number.

195030051 is a deficient number, since it is larger than the sum of its proper divisors (65010021).

195030051 is an equidigital number, since it uses as much as digits as its factorization.

195030051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65010020.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 195030051 is about 13965.3160007212. The cubic root of 195030051 is about 579.9187866867.

The spelling of 195030051 in words is "one hundred ninety-five million, thirty thousand, fifty-one".