145113617 has 4 divisors (see below), whose sum is σ = 158305776. Its totient is φ = 131921460.

The previous prime is 145113607. The next prime is 145113641. The reversal of 145113617 is 716311541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 145113617 - 2²⁰ = 144065041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145113617.

It is not an unprimeable number, because it can be changed into a prime (145113607) 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, 6596063 + ... + 6596084.

It is an arithmetic number, because the mean of its divisors is an integer number (39576444).

Almost surely, 2^145113617 is an apocalyptic number.

It is an amenable number.

145113617 is a deficient number, since it is larger than the sum of its proper divisors (13192159).

145113617 is a wasteful number, since it uses less digits than its factorization.

145113617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13192158.

The product of its digits is 2520, while the sum is 29.

The square root of 145113617 is about 12046.3113441418. The cubic root of 145113617 is about 525.4959691018.

The spelling of 145113617 in words is "one hundred forty-five million, one hundred thirteen thousand, six hundred seventeen".