145195871 has 2 divisors, whose sum is σ = 145195872. Its totient is φ = 145195870.

The previous prime is 145195867. The next prime is 145195903. The reversal of 145195871 is 178591541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145195871 - 2² = 145195867 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145195571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72597935 + 72597936.

It is an arithmetic number, because the mean of its divisors is an integer number (72597936).

Almost surely, 2^145195871 is an apocalyptic number.

145195871 is a deficient number, since it is larger than the sum of its proper divisors (1).

145195871 is an equidigital number, since it uses as much as digits as its factorization.

145195871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 41.

The square root of 145195871 is about 12049.7249346199. The cubic root of 145195871 is about 525.5952384010.

The spelling of 145195871 in words is "one hundred forty-five million, one hundred ninety-five thousand, eight hundred seventy-one".