145847285 has 4 divisors (see below), whose sum is σ = 175016748. Its totient is φ = 116677824.

The previous prime is 145847269. The next prime is 145847311. The reversal of 145847285 is 582748541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81558961 + 64288324 = 9031^2 + 8018^2 .

It is a cyclic number.

It is not a de Polignac number, because 145847285 - 2⁴ = 145847269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14584724 + ... + 14584733.

It is an arithmetic number, because the mean of its divisors is an integer number (43754187).

Almost surely, 2^145847285 is an apocalyptic number.

It is an amenable number.

145847285 is a deficient number, since it is larger than the sum of its proper divisors (29169463).

145847285 is an equidigital number, since it uses as much as digits as its factorization.

145847285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29169462.

The product of its digits is 358400, while the sum is 44.

The square root of 145847285 is about 12076.7249285558. The cubic root of 145847285 is about 526.3800847444.

The spelling of 145847285 in words is "one hundred forty-five million, eight hundred forty-seven thousand, two hundred eighty-five".