51500014 has 4 divisors (see below), whose sum is σ = 77250024. Its totient is φ = 25750006.

The previous prime is 51500011. The next prime is 51500023. The reversal of 51500014 is 41000515.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12875002 + ... + 12875005.

It is an arithmetic number, because the mean of its divisors is an integer number (19312506).

Almost surely, 2^51500014 is an apocalyptic number.

51500014 is a deficient number, since it is larger than the sum of its proper divisors (25750010).

51500014 is a wasteful number, since it uses less digits than its factorization.

51500014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25750009.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 51500014 is about 7176.3510226298. The cubic root of 51500014 is about 372.0509767502.

Adding to 51500014 its reverse (41000515), we get a palindrome (92500529).

The spelling of 51500014 in words is "fifty-one million, five hundred thousand, fourteen".