51789950 has 24 divisors (see below), whose sum is σ = 96805560. Its totient is φ = 20613600.

The previous prime is 51789917. The next prime is 51789967. The reversal of 51789950 is 5998715.

It is a happy number.

It is a Curzon number.

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, 8096 + ... + 13004.

It is an arithmetic number, because the mean of its divisors is an integer number (4033565).

Almost surely, 2^51789950 is an apocalyptic number.

51789950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51789950 is a deficient number, since it is larger than the sum of its proper divisors (45015610).

51789950 is a wasteful number, since it uses less digits than its factorization.

51789950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132 (or 5127 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 51789950 is about 7196.5234662301. The cubic root of 51789950 is about 372.7478644006.

The spelling of 51789950 in words is "fifty-one million, seven hundred eighty-nine thousand, nine hundred fifty".