51168660 has 48 divisors (see below), whose sum is σ = 144559296. Its totient is φ = 13522432.

The previous prime is 51168659. The next prime is 51168661. The reversal of 51168660 is 6686115.

It is an interprime number because it is at equal distance from previous prime (51168659) and next prime (51168661).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51168661) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3007 + ... + 10553.

It is an arithmetic number, because the mean of its divisors is an integer number (3011652).

Almost surely, 2^51168660 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 51168660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72279648).

51168660 is an abundant number, since it is smaller than the sum of its proper divisors (93390636).

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

51168660 is a wasteful number, since it uses less digits than its factorization.

51168660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7672 (or 7670 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 51168660 is about 7153.2272436992. The cubic root of 51168660 is about 371.2513269574.

The spelling of 51168660 in words is "fifty-one million, one hundred sixty-eight thousand, six hundred sixty".