145805522 has 8 divisors (see below), whose sum is σ = 218848716. Its totient is φ = 72855952.

The previous prime is 145805507. The next prime is 145805531. The reversal of 145805522 is 225508541.

It can be written as a sum of positive squares in 2 ways, for example, as 130210921 + 15594601 = 11411^2 + 3949^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19373 + ... + 25824.

Almost surely, 2^145805522 is an apocalyptic number.

145805522 is a deficient number, since it is larger than the sum of its proper divisors (73043194).

145805522 is a wasteful number, since it uses less digits than its factorization.

145805522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46812.

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 145805522 is about 12074.9957349889. The cubic root of 145805522 is about 526.3298374142.

It can be divided in two parts, 14580 and 5522, that added together give a palindrome (20102).

The spelling of 145805522 in words is "one hundred forty-five million, eight hundred five thousand, five hundred twenty-two".