145570517 has 8 divisors (see below), whose sum is σ = 151427640. Its totient is φ = 139769280.

The previous prime is 145570511. The next prime is 145570531. The reversal of 145570517 is 715075541.

It can be written as a sum of positive squares in 4 ways, for example, as 1234321 + 144336196 = 1111^2 + 12014^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 145570517 - 2⁴ = 145570501 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 (145570511) 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, 8618 + ... + 19115.

It is an arithmetic number, because the mean of its divisors is an integer number (18928455).

Almost surely, 2^145570517 is an apocalyptic number.

It is an amenable number.

145570517 is a deficient number, since it is larger than the sum of its proper divisors (5857123).

145570517 is a wasteful number, since it uses less digits than its factorization.

145570517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27943.

The product of its (nonzero) digits is 24500, while the sum is 35.

The square root of 145570517 is about 12065.2607514301. The cubic root of 145570517 is about 526.0469111009.

The spelling of 145570517 in words is "one hundred forty-five million, five hundred seventy thousand, five hundred seventeen".