51825510 has 72 divisors (see below), whose sum is σ = 148140720. Its totient is φ = 12561120.

The previous prime is 51825497. The next prime is 51825533. The reversal of 51825510 is 1552815.

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, 8511 + ... + 13269.

It is an arithmetic number, because the mean of its divisors is an integer number (2057510).

Almost surely, 2^51825510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51825510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74070360).

51825510 is an abundant number, since it is smaller than the sum of its proper divisors (96315210).

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

51825510 is a wasteful number, since it uses less digits than its factorization.

51825510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794 (or 4780 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 51825510 is about 7198.9936796750. The cubic root of 51825510 is about 372.8331568915.

The spelling of 51825510 in words is "fifty-one million, eight hundred twenty-five thousand, five hundred ten".