51071950 has 24 divisors (see below), whose sum is σ = 95875560. Its totient is φ = 20239200.

The previous prime is 51071941. The next prime is 51072017. The reversal of 51071950 is 5917015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 765 + ... + 10135.

It is an arithmetic number, because the mean of its divisors is an integer number (3994815).

Almost surely, 2^51071950 is an apocalyptic number.

51071950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51071950 is a deficient number, since it is larger than the sum of its proper divisors (44803610).

51071950 is a wasteful number, since it uses less digits than its factorization.

51071950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9492 (or 9487 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 51071950 is about 7146.4641606881. The cubic root of 51071950 is about 371.0172881320.

Adding to 51071950 its reverse (5917015), we get a palindrome (56988965).

The spelling of 51071950 in words is "fifty-one million, seventy-one thousand, nine hundred fifty".