195751 has 2 divisors, whose sum is σ = 195752. Its totient is φ = 195750.

The previous prime is 195743. The next prime is 195761. The reversal of 195751 is 157591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195751 - 2³ = 195743 is a prime.

195751 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97875 + 97876.

It is an arithmetic number, because the mean of its divisors is an integer number (97876).

2¹⁹⁵⁷⁵¹ is an apocalyptic number.

195751 is a deficient number, since it is larger than the sum of its proper divisors (1).

195751 is an equidigital number, since it uses as much as digits as its factorization.

195751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1575, while the sum is 28.

The square root of 195751 is about 442.4375662170. The cubic root of 195751 is about 58.0632484822.

It can be divided in two parts, 195 and 751, that added together give a triangular number (946 = T₄₃).

The spelling of 195751 in words is "one hundred ninety-five thousand, seven hundred fifty-one".