51043623 has 8 divisors (see below), whose sum is σ = 69641088. Its totient is φ = 33237624.

The previous prime is 51043591. The next prime is 51043651. The reversal of 51043623 is 32634015.

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 51043623 - 2⁵ = 51043591 is a prime.

It is a super-2 number, since 2×51043623² = 5210902897932258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51043593 and 51043602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51043123) 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, 197715 + ... + 197972.

It is an arithmetic number, because the mean of its divisors is an integer number (8705136).

Almost surely, 2^51043623 is an apocalyptic number.

51043623 is a deficient number, since it is larger than the sum of its proper divisors (18597465).

51043623 is a wasteful number, since it uses less digits than its factorization.

51043623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395733.

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

The square root of 51043623 is about 7144.4819966181. The cubic root of 51043623 is about 370.9486806714.

Adding to 51043623 its reverse (32634015), we get a palindrome (83677638).

The spelling of 51043623 in words is "fifty-one million, forty-three thousand, six hundred twenty-three".