51080380 has 48 divisors (see below), whose sum is σ = 116169984. Its totient is φ = 18754560.

The previous prime is 51080377. The next prime is 51080389. The reversal of 51080380 is 8308015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51080389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57540 + ... + 58420.

It is an arithmetic number, because the mean of its divisors is an integer number (2420208).

Almost surely, 2^51080380 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 51080380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58084992).

51080380 is an abundant number, since it is smaller than the sum of its proper divisors (65089604).

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

51080380 is a wasteful number, since it uses less digits than its factorization.

51080380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 51080380 is about 7147.0539385120. The cubic root of 51080380 is about 371.0377005350.

Adding to 51080380 its reverse (8308015), we get a palindrome (59388395).

The spelling of 51080380 in words is "fifty-one million, eighty thousand, three hundred eighty".