145109101 has 2 divisors, whose sum is σ = 145109102. Its totient is φ = 145109100.

The previous prime is 145109077. The next prime is 145109141. The reversal of 145109101 is 101901541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76650025 + 68459076 = 8755^2 + 8274^2 .

It is a cyclic number.

It is not a de Polignac number, because 145109101 - 2⁷ = 145108973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145109141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72554550 + 72554551.

It is an arithmetic number, because the mean of its divisors is an integer number (72554551).

Almost surely, 2^145109101 is an apocalyptic number.

It is an amenable number.

145109101 is a deficient number, since it is larger than the sum of its proper divisors (1).

145109101 is an equidigital number, since it uses as much as digits as its factorization.

145109101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 145109101 is about 12046.1238994126. The cubic root of 145109101 is about 525.4905178229.

The spelling of 145109101 in words is "one hundred forty-five million, one hundred nine thousand, one hundred one".