51888816 has 80 divisors (see below), whose sum is σ = 170227200. Its totient is φ = 14824512.

The previous prime is 51888797. The next prime is 51888841. The reversal of 51888816 is 61888815.

It is a happy 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, 5556 + ... + 11603.

It is an arithmetic number, because the mean of its divisors is an integer number (2127840).

Almost surely, 2^51888816 is an apocalyptic number.

51888816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51888816 is an abundant number, since it is smaller than the sum of its proper divisors (118338384).

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

51888816 is a wasteful number, since it uses less digits than its factorization.

51888816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17183 (or 17171 counting only the distinct ones).

The product of its digits is 122880, while the sum is 45.

The square root of 51888816 is about 7203.3892023130. The cubic root of 51888816 is about 372.9849030875.

Subtracting 51888816 from its reverse (61888815), we obtain a palindrome (9999999).

The spelling of 51888816 in words is "fifty-one million, eight hundred eighty-eight thousand, eight hundred sixteen".