145671245 has 8 divisors (see below), whose sum is σ = 175532280. Its totient is φ = 116052480.

The previous prime is 145671241. The next prime is 145671269. The reversal of 145671245 is 542176541.

It can be written as a sum of positive squares in 4 ways, for example, as 40424164 + 105247081 = 6358^2 + 10259^2 .

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

It is not a de Polignac number, because 145671245 - 2² = 145671241 is a prime.

It is a super-2 number, since 2×145671245² = 42440223239700050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145671241) 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 7 ways as a sum of consecutive naturals, for example, 59240 + ... + 61649.

It is an arithmetic number, because the mean of its divisors is an integer number (21941535).

Almost surely, 2^145671245 is an apocalyptic number.

It is an amenable number.

145671245 is a deficient number, since it is larger than the sum of its proper divisors (29861035).

145671245 is a wasteful number, since it uses less digits than its factorization.

145671245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121135.

The product of its digits is 33600, while the sum is 35.

The square root of 145671245 is about 12069.4343280868. The cubic root of 145671245 is about 526.1682164252.

The spelling of 145671245 in words is "one hundred forty-five million, six hundred seventy-one thousand, two hundred forty-five".