523990195 has 4 divisors (see below), whose sum is σ = 628788240. Its totient is φ = 419192152.

The previous prime is 523990193. The next prime is 523990219. The reversal of 523990195 is 591099325.

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 523990195 - 2¹ = 523990193 is a prime.

It is a super-2 number, since 2×523990195² = 549131448912276050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523990193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52399015 + ... + 52399024.

It is an arithmetic number, because the mean of its divisors is an integer number (157197060).

Almost surely, 2^523990195 is an apocalyptic number.

523990195 is a deficient number, since it is larger than the sum of its proper divisors (104798045).

523990195 is a wasteful number, since it uses less digits than its factorization.

523990195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104798044.

The product of its (nonzero) digits is 109350, while the sum is 43.

The square root of 523990195 is about 22890.8321168104. The cubic root of 523990195 is about 806.1967693559.

The spelling of 523990195 in words is "five hundred twenty-three million, nine hundred ninety thousand, one hundred ninety-five".