51643023 has 8 divisors (see below), whose sum is σ = 69103536. Its totient is φ = 34305600.

The previous prime is 51642979. The next prime is 51643037. The reversal of 51643023 is 32034615.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51643023 - 2¹⁰ = 51641999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51642984 and 51643002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51643223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29788 + ... + 31473.

It is an arithmetic number, because the mean of its divisors is an integer number (8637942).

Almost surely, 2^51643023 is an apocalyptic number.

51643023 is a deficient number, since it is larger than the sum of its proper divisors (17460513).

51643023 is a wasteful number, since it uses less digits than its factorization.

51643023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61545.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 51643023 is about 7186.3080229002. The cubic root of 51643023 is about 372.3950379163.

Adding to 51643023 its reverse (32034615), we get a palindrome (83677638).

The spelling of 51643023 in words is "fifty-one million, six hundred forty-three thousand, twenty-three".