145885441 has 8 divisors (see below), whose sum is σ = 157253544. Its totient is φ = 134538240.

The previous prime is 145885427. The next prime is 145885451. The reversal of 145885441 is 144588541.

It can be written as a sum of positive squares in 4 ways, for example, as 18105025 + 127780416 = 4255^2 + 11304^2 .

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 145885441 - 2¹¹ = 145883393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145885394 and 145885403.

It is not an unprimeable number, because it can be changed into a prime (145885451) 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, 11211 + ... + 20431.

It is an arithmetic number, because the mean of its divisors is an integer number (19656693).

Almost surely, 2^145885441 is an apocalyptic number.

It is an amenable number.

145885441 is a deficient number, since it is larger than the sum of its proper divisors (11368103).

145885441 is a wasteful number, since it uses less digits than its factorization.

145885441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10451.

The product of its digits is 102400, while the sum is 40.

The square root of 145885441 is about 12078.3045581737. The cubic root of 145885441 is about 526.4259839128.

The spelling of 145885441 in words is "one hundred forty-five million, eight hundred eighty-five thousand, four hundred forty-one".