145199671 has 2 divisors, whose sum is σ = 145199672. Its totient is φ = 145199670.

The previous prime is 145199657. The next prime is 145199683. The reversal of 145199671 is 176991541.

It is a happy number.

145199671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145199671 - 2⁷ = 145199543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145199611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72599835 + 72599836.

It is an arithmetic number, because the mean of its divisors is an integer number (72599836).

Almost surely, 2^145199671 is an apocalyptic number.

145199671 is a deficient number, since it is larger than the sum of its proper divisors (1).

145199671 is an equidigital number, since it uses as much as digits as its factorization.

145199671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 145199671 is about 12049.8826135361. The cubic root of 145199671 is about 525.5998235738.

The spelling of 145199671 in words is "one hundred forty-five million, one hundred ninety-nine thousand, six hundred seventy-one".