145805885 has 8 divisors (see below), whose sum is σ = 175633920. Its totient is φ = 116200144.

The previous prime is 145805861. The next prime is 145805909. The reversal of 145805885 is 588508541.

It is an interprime number because it is at equal distance from previous prime (145805861) and next prime (145805909).

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 145805885 - 2⁸ = 145805629 is a prime.

It is a super-2 number, since 2×145805885² = 42518712201266450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 54125 + ... + 56754.

It is an arithmetic number, because the mean of its divisors is an integer number (21954240).

Almost surely, 2^145805885 is an apocalyptic number.

It is an amenable number.

145805885 is a deficient number, since it is larger than the sum of its proper divisors (29828035).

145805885 is a wasteful number, since it uses less digits than its factorization.

145805885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111147.

The product of its (nonzero) digits is 256000, while the sum is 44.

The square root of 145805885 is about 12075.0107660407. The cubic root of 145805885 is about 526.3302742005.

The spelling of 145805885 in words is "one hundred forty-five million, eight hundred five thousand, eight hundred eighty-five".