1995523 has 4 divisors (see below), whose sum is σ = 2010888. Its totient is φ = 1980160.

The previous prime is 1995517. The next prime is 1995527. The reversal of 1995523 is 3255991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1995523 - 2⁹ = 1995011 is a prime.

It is a super-2 number, since 2×1995523² = 7964224087058, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1995527) by changing a digit.

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, 7486 + ... + 7747.

It is an arithmetic number, because the mean of its divisors is an integer number (502722).

2^1995523 is an apocalyptic number.

1995523 is a deficient number, since it is larger than the sum of its proper divisors (15365).

1995523 is a wasteful number, since it uses less digits than its factorization.

1995523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15364.

The product of its digits is 12150, while the sum is 34.

The square root of 1995523 is about 1412.6298170434. The cubic root of 1995523 is about 125.8980236452.

The spelling of 1995523 in words is "one million, nine hundred ninety-five thousand, five hundred twenty-three".