145169959 has 4 divisors (see below), whose sum is σ = 158367240. Its totient is φ = 131972680.

The previous prime is 145169933. The next prime is 145169963. The reversal of 145169959 is 959961541.

145169959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 145169959 - 2⁷ = 145169831 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 (145169989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6598624 + ... + 6598645.

It is an arithmetic number, because the mean of its divisors is an integer number (39591810).

Almost surely, 2^145169959 is an apocalyptic number.

145169959 is a deficient number, since it is larger than the sum of its proper divisors (13197281).

145169959 is a wasteful number, since it uses less digits than its factorization.

145169959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13197280.

The product of its digits is 437400, while the sum is 49.

The square root of 145169959 is about 12048.6496753786. The cubic root of 145169959 is about 525.5639702160.

The spelling of 145169959 in words is "one hundred forty-five million, one hundred sixty-nine thousand, nine hundred fifty-nine".