145052717 has 4 divisors (see below), whose sum is σ = 148426080. Its totient is φ = 141679356.

The previous prime is 145052701. The next prime is 145052729. The reversal of 145052717 is 717250541.

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, and also an emirpimes, since its reverse is a distinct semiprime: 717250541 = 7 ⋅102464363.

It is a cyclic number.

It is not a de Polignac number, because 145052717 - 2⁴ = 145052701 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 (145052767) 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, 1686617 + ... + 1686702.

It is an arithmetic number, because the mean of its divisors is an integer number (37106520).

Almost surely, 2^145052717 is an apocalyptic number.

It is an amenable number.

145052717 is a deficient number, since it is larger than the sum of its proper divisors (3373363).

145052717 is an equidigital number, since it uses as much as digits as its factorization.

145052717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373362.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 145052717 is about 12043.7833341521. The cubic root of 145052717 is about 525.4224469815.

The spelling of 145052717 in words is "one hundred forty-five million, fifty-two thousand, seven hundred seventeen".