51380880 has 40 divisors (see below), whose sum is σ = 159281472. Its totient is φ = 13701504.

The previous prime is 51380867. The next prime is 51380881. The reversal of 51380880 is 8808315.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (51380881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106804 + ... + 107283.

Almost surely, 2^51380880 is an apocalyptic number.

It is an amenable number.

51380880 is an abundant number, since it is smaller than the sum of its proper divisors (107900592).

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

51380880 is a wasteful number, since it uses less digits than its factorization.

51380880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214103 (or 214097 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 51380880 is about 7168.0457587825. The cubic root of 51380880 is about 371.7638691069.

The spelling of 51380880 in words is "fifty-one million, three hundred eighty thousand, eight hundred eighty".