523116641 has 4 divisors (see below), whose sum is σ = 524820912. Its totient is φ = 521412372.

The previous prime is 523116593. The next prime is 523116647. The reversal of 523116641 is 146611325.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 523116641 - 2¹⁴ = 523100257 is a prime.

It is a super-2 number, since 2×523116641² = 547302040182245762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (523116647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851675 + ... + 852288.

It is an arithmetic number, because the mean of its divisors is an integer number (131205228).

Almost surely, 2^523116641 is an apocalyptic number.

It is an amenable number.

523116641 is a deficient number, since it is larger than the sum of its proper divisors (1704271).

523116641 is a wasteful number, since it uses less digits than its factorization.

523116641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704270.

The product of its digits is 4320, while the sum is 29.

The square root of 523116641 is about 22871.7432872967. The cubic root of 523116641 is about 805.7485115182.

Adding to 523116641 its reverse (146611325), we get a palindrome (669727966).

The spelling of 523116641 in words is "five hundred twenty-three million, one hundred sixteen thousand, six hundred forty-one".