51070080 has 128 divisors (see below), whose sum is σ = 165631680. Its totient is φ = 13381632.

The previous prime is 51070067. The next prime is 51070139. The reversal of 51070080 is 8007015.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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, 128442 + ... + 128838.

Almost surely, 2^51070080 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 51070080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82815840).

51070080 is an abundant number, since it is smaller than the sum of its proper divisors (114561600).

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

51070080 is a wasteful number, since it uses less digits than its factorization.

51070080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 51070080 is about 7146.3333255593. Note that the first 4 decimals coincide. The cubic root of 51070080 is about 371.0127598094.

Adding to 51070080 its reverse (8007015), we get a palindrome (59077095).

The spelling of 51070080 in words is "fifty-one million, seventy thousand, eighty".