143445505 has 16 divisors (see below), whose sum is σ = 196963200. Its totient is φ = 98243712.

The previous prime is 143445499. The next prime is 143445521. The reversal of 143445505 is 505544341.

It is a happy number.

It is not a de Polignac number, because 143445505 - 2¹¹ = 143443457 is a prime.

It is a super-2 number, since 2×143445505² = 41153225809410050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34762 + ... + 38668.

It is an arithmetic number, because the mean of its divisors is an integer number (12310200).

Almost surely, 2^143445505 is an apocalyptic number.

It is an amenable number.

143445505 is a deficient number, since it is larger than the sum of its proper divisors (53517695).

143445505 is a wasteful number, since it uses less digits than its factorization.

143445505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 143445505 is about 11976.8737573709. The cubic root of 143445505 is about 523.4746412288.

Adding to 143445505 its reverse (505544341), we get a palindrome (648989846).

The spelling of 143445505 in words is "one hundred forty-three million, four hundred forty-five thousand, five hundred five".