51673950 has 72 divisors (see below), whose sum is σ = 144006408. Its totient is φ = 13776480.

The previous prime is 51673943. The next prime is 51673991. The reversal of 51673950 is 5937615.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10024 + ... + 14276.

It is an arithmetic number, because the mean of its divisors is an integer number (2000089).

Almost surely, 2^51673950 is an apocalyptic number.

51673950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51673950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72003204).

51673950 is an abundant number, since it is smaller than the sum of its proper divisors (92332458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51673950 is a wasteful number, since it uses less digits than its factorization.

51673950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280 (or 4263 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 51673950 is about 7188.4595011727. The cubic root of 51673950 is about 372.4693607218.

The spelling of 51673950 in words is "fifty-one million, six hundred seventy-three thousand, nine hundred fifty".