195522449 has 4 divisors (see below), whose sum is σ = 195974436. Its totient is φ = 195070464.

The previous prime is 195522433. The next prime is 195522451. The reversal of 195522449 is 944225591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944225591 = 23899 ⋅39509.

It can be written as a sum of positive squares in 2 ways, for example, as 109830400 + 85692049 = 10480^2 + 9257^2 .

It is a cyclic number.

It is not a de Polignac number, because 195522449 - 2⁴ = 195522433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195522499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225344 + ... + 226209.

It is an arithmetic number, because the mean of its divisors is an integer number (48993609).

Almost surely, 2^195522449 is an apocalyptic number.

It is an amenable number.

195522449 is a deficient number, since it is larger than the sum of its proper divisors (451987).

195522449 is an equidigital number, since it uses as much as digits as its factorization.

195522449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451986.

The product of its digits is 129600, while the sum is 41.

The square root of 195522449 is about 13982.9342056666. The cubic root of 195522449 is about 580.4064224347.

The spelling of 195522449 in words is "one hundred ninety-five million, five hundred twenty-two thousand, four hundred forty-nine".