523049645 has 4 divisors (see below), whose sum is σ = 627659580. Its totient is φ = 418439712.

The previous prime is 523049641. The next prime is 523049663. The reversal of 523049645 is 546940325.

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

It can be written as a sum of positive squares in 2 ways, for example, as 252841801 + 270207844 = 15901^2 + 16438^2 .

It is a cyclic number.

It is not a de Polignac number, because 523049645 - 2² = 523049641 is a prime.

It is a super-3 number, since 3×523049645³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 523049599 and 523049608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523049641) 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, 52304960 + ... + 52304969.

It is an arithmetic number, because the mean of its divisors is an integer number (156914895).

Almost surely, 2^523049645 is an apocalyptic number.

It is an amenable number.

523049645 is a deficient number, since it is larger than the sum of its proper divisors (104609935).

523049645 is a wasteful number, since it uses less digits than its factorization.

523049645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104609934.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 523049645 is about 22870.2786384425. The cubic root of 523049645 is about 805.7141124138.

The spelling of 523049645 in words is "five hundred twenty-three million, forty-nine thousand, six hundred forty-five".