51423523 has 2 divisors, whose sum is σ = 51423524. Its totient is φ = 51423522.

The previous prime is 51423517. The next prime is 51423527. The reversal of 51423523 is 32532415.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51423523 is a prime.

It is a super-3 number, since 3×51423523³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (51423527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25711761 + 25711762.

It is an arithmetic number, because the mean of its divisors is an integer number (25711762).

Almost surely, 2^51423523 is an apocalyptic number.

51423523 is a deficient number, since it is larger than the sum of its proper divisors (1).

51423523 is an equidigital number, since it uses as much as digits as its factorization.

51423523 is an evil number, because the sum of its binary digits is even.

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

The square root of 51423523 is about 7171.0196625027. The cubic root of 51423523 is about 371.8666877882.

Adding to 51423523 its reverse (32532415), we get a palindrome (83955938).

The spelling of 51423523 in words is "fifty-one million, four hundred twenty-three thousand, five hundred twenty-three".