51360980 has 48 divisors (see below), whose sum is σ = 118492416. Its totient is φ = 18545280.

The previous prime is 51360979. The next prime is 51360997. The reversal of 51360980 is 8906315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33797 + ... + 35283.

It is an arithmetic number, because the mean of its divisors is an integer number (2468592).

Almost surely, 2^51360980 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 51360980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59246208).

51360980 is an abundant number, since it is smaller than the sum of its proper divisors (67131436).

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

51360980 is a wasteful number, since it uses less digits than its factorization.

51360980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 51360980 is about 7166.6575193740. The cubic root of 51360980 is about 371.7158677472.

The spelling of 51360980 in words is "fifty-one million, three hundred sixty thousand, nine hundred eighty".