51715023 has 4 divisors (see below), whose sum is σ = 68953368. Its totient is φ = 34476680.

The previous prime is 51715019. The next prime is 51715043. The reversal of 51715023 is 32051715.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51715023 - 2² = 51715019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51714984 and 51715002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51715043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8619168 + ... + 8619173.

It is an arithmetic number, because the mean of its divisors is an integer number (17238342).

Almost surely, 2^51715023 is an apocalyptic number.

51715023 is a deficient number, since it is larger than the sum of its proper divisors (17238345).

51715023 is a wasteful number, since it uses less digits than its factorization.

51715023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17238344.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 51715023 is about 7191.3158044964. The cubic root of 51715023 is about 372.5680202496.

Adding to 51715023 its reverse (32051715), we get a palindrome (83766738).

The spelling of 51715023 in words is "fifty-one million, seven hundred fifteen thousand, twenty-three".