145017959 has 4 divisors (see below), whose sum is σ = 145143816. Its totient is φ = 144892104.

The previous prime is 145017953. The next prime is 145017991. The reversal of 145017959 is 959710541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959710541 = 7933 ⋅120977.

It is a cyclic number.

It is not a de Polignac number, because 145017959 - 2⁸ = 145017703 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 (145017953) 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, 61184 + ... + 63509.

It is an arithmetic number, because the mean of its divisors is an integer number (36285954).

Almost surely, 2^145017959 is an apocalyptic number.

145017959 is a deficient number, since it is larger than the sum of its proper divisors (125857).

145017959 is a wasteful number, since it uses less digits than its factorization.

145017959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125856.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 145017959 is about 12042.3402625902. The cubic root of 145017959 is about 525.3804758216.

The spelling of 145017959 in words is "one hundred forty-five million, seventeen thousand, nine hundred fifty-nine".