145109087 has 4 divisors (see below), whose sum is σ = 145136376. Its totient is φ = 145081800.

The previous prime is 145109077. The next prime is 145109101. The reversal of 145109087 is 780901541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145109087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145109077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789 + ... + 17262.

It is an arithmetic number, because the mean of its divisors is an integer number (36284094).

Almost surely, 2^145109087 is an apocalyptic number.

145109087 is a deficient number, since it is larger than the sum of its proper divisors (27289).

145109087 is an equidigital number, since it uses as much as digits as its factorization.

145109087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27288.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 145109087 is about 12046.1233183128. The cubic root of 145109087 is about 525.4905009233.

The spelling of 145109087 in words is "one hundred forty-five million, one hundred nine thousand, eighty-seven".