51610650 has 192 divisors, whose sum is σ = 166656000. Its totient is φ = 10264320.

The previous prime is 51610649. The next prime is 51610661. The reversal of 51610650 is 5601615.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51610650.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 259251 + ... + 259449.

It is an arithmetic number, because the mean of its divisors is an integer number (868000).

Almost surely, 2^51610650 is an apocalyptic number.

51610650 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 51610650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83328000).

51610650 is an abundant number, since it is smaller than the sum of its proper divisors (115045350).

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

51610650 is a wasteful number, since it uses less digits than its factorization.

51610650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 51610650 is about 7184.0552614801. The cubic root of 51610650 is about 372.3172083355.

The spelling of 51610650 in words is "fifty-one million, six hundred ten thousand, six hundred fifty".