145135617 has 8 divisors (see below), whose sum is σ = 211106400. Its totient is φ = 87960960.

The previous prime is 145135609. The next prime is 145135619. The reversal of 145135617 is 716531541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145135617 - 2³ = 145135609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 4398049 = 145135617 / (1 + 4 + 5 + 1 + 3 + 5 + 6 + 1 + 7).

It is not an unprimeable number, because it can be changed into a prime (145135619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2198992 + ... + 2199057.

It is an arithmetic number, because the mean of its divisors is an integer number (26388300).

Almost surely, 2^145135617 is an apocalyptic number.

It is an amenable number.

145135617 is a deficient number, since it is larger than the sum of its proper divisors (65970783).

145135617 is a wasteful number, since it uses less digits than its factorization.

145135617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398063.

The product of its digits is 12600, while the sum is 33.

The square root of 145135617 is about 12047.2244521300. The cubic root of 145135617 is about 525.5225237592.

The spelling of 145135617 in words is "one hundred forty-five million, one hundred thirty-five thousand, six hundred seventeen".