523227661 has 4 divisors (see below), whose sum is σ = 570793824. Its totient is φ = 475661500.

The previous prime is 523227659. The next prime is 523227671. The reversal of 523227661 is 166722325.

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 523227661 - 2¹ = 523227659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523227671) 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, 23783065 + ... + 23783086.

It is an arithmetic number, because the mean of its divisors is an integer number (142698456).

Almost surely, 2^523227661 is an apocalyptic number.

It is an amenable number.

523227661 is a deficient number, since it is larger than the sum of its proper divisors (47566163).

523227661 is a wasteful number, since it uses less digits than its factorization.

523227661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47566162.

The product of its digits is 30240, while the sum is 34.

The square root of 523227661 is about 22874.1701707406. The cubic root of 523227661 is about 805.8055082855.

Adding to 523227661 its reverse (166722325), we get a palindrome (689949986).

The spelling of 523227661 in words is "five hundred twenty-three million, two hundred twenty-seven thousand, six hundred sixty-one".