51380888 has 32 divisors (see below), whose sum is σ = 107103360. Its totient is φ = 22947840.

The previous prime is 51380881. The next prime is 51380897. The reversal of 51380888 is 88808315.

It is a happy number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4745 + ... + 11192.

It is an arithmetic number, because the mean of its divisors is an integer number (3346980).

Almost surely, 2^51380888 is an apocalyptic number.

It is an amenable number.

51380888 is an abundant number, since it is smaller than the sum of its proper divisors (55722472).

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

51380888 is a wasteful number, since it uses less digits than its factorization.

51380888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15987 (or 15983 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 41.

The square root of 51380888 is about 7168.0463168146. The cubic root of 51380888 is about 371.7638884014.

The spelling of 51380888 in words is "fifty-one million, three hundred eighty thousand, eight hundred eighty-eight".