51486960 has 160 divisors (see below), whose sum is σ = 192130560. Its totient is φ = 11142144.

The previous prime is 51486959. The next prime is 51486961. The reversal of 51486960 is 6968415.

It is an interprime number because it is at equal distance from previous prime (51486959) and next prime (51486961).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51486961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31114 + ... + 32726.

It is an arithmetic number, because the mean of its divisors is an integer number (1200816).

Almost surely, 2^51486960 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 51486960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96065280).

51486960 is an abundant number, since it is smaller than the sum of its proper divisors (140643600).

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

51486960 is a wasteful number, since it uses less digits than its factorization.

51486960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 51486960 is about 7175.4414498343. The cubic root of 51486960 is about 372.0195388049.

The spelling of 51486960 in words is "fifty-one million, four hundred eighty-six thousand, nine hundred sixty".