51282660 has 192 divisors, whose sum is σ = 173859840. Its totient is φ = 11128320.

The previous prime is 51282607. The next prime is 51282683. The reversal of 51282660 is 6628215.

It is a super-2 number, since 2×51282660² = 5259822433351200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 368871 + ... + 369009.

It is an arithmetic number, because the mean of its divisors is an integer number (905520).

Almost surely, 2^51282660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51282660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86929920).

51282660 is an abundant number, since it is smaller than the sum of its proper divisors (122577180).

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

51282660 is a wasteful number, since it uses less digits than its factorization.

51282660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 51282660 is about 7161.1912416860. The cubic root of 51282660 is about 371.5268293159.

The spelling of 51282660 in words is "fifty-one million, two hundred eighty-two thousand, six hundred sixty".