145635841 has 8 divisors (see below), whose sum is σ = 157092264. Its totient is φ = 134215680.

The previous prime is 145635827. The next prime is 145635859. The reversal of 145635841 is 148536541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4857616 + 140778225 = 2204^2 + 11865^2 .

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 145635841 - 2¹⁹ = 145111553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145635841.

It is not an unprimeable number, because it can be changed into a prime (145635871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406 + ... + 17071.

It is an arithmetic number, because the mean of its divisors is an integer number (19636533).

Almost surely, 2^145635841 is an apocalyptic number.

It is an amenable number.

145635841 is a deficient number, since it is larger than the sum of its proper divisors (11456423).

145635841 is a wasteful number, since it uses less digits than its factorization.

145635841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18131.

The product of its digits is 57600, while the sum is 37.

The square root of 145635841 is about 12067.9675587897. The cubic root of 145635841 is about 526.1255862573.

The spelling of 145635841 in words is "one hundred forty-five million, six hundred thirty-five thousand, eight hundred forty-one".