523423501 has 4 divisors (see below), whose sum is σ = 523477600. Its totient is φ = 523369404.

The previous prime is 523423471. The next prime is 523423519. The reversal of 523423501 is 105324325.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 523423501 - 2⁹ = 523422989 is a prime.

It is a super-2 number, since 2×523423501² = 547944322798194002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523423541) 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, 8121 + ... + 33358.

It is an arithmetic number, because the mean of its divisors is an integer number (130869400).

Almost surely, 2^523423501 is an apocalyptic number.

It is an amenable number.

523423501 is a deficient number, since it is larger than the sum of its proper divisors (54099).

523423501 is a wasteful number, since it uses less digits than its factorization.

523423501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54098.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 523423501 is about 22878.4505812784. The cubic root of 523423501 is about 805.9060313004.

Adding to 523423501 its reverse (105324325), we get a palindrome (628747826).

The spelling of 523423501 in words is "five hundred twenty-three million, four hundred twenty-three thousand, five hundred one".