51808848 has 160 divisors (see below), whose sum is σ = 170822400. Its totient is φ = 13160448.

The previous prime is 51808817. The next prime is 51808853. The reversal of 51808848 is 84880815.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126468 + ... + 126876.

It is an arithmetic number, because the mean of its divisors is an integer number (1067640).

Almost surely, 2^51808848 is an apocalyptic number.

51808848 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51808848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85411200).

51808848 is an abundant number, since it is smaller than the sum of its proper divisors (119013552).

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

51808848 is a wasteful number, since it uses less digits than its factorization.

51808848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 51808848 is about 7197.8363415682. The cubic root of 51808848 is about 372.7931970859.

It can be divided in two parts, 5180 and 8848, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 51808848 in words is "fifty-one million, eight hundred eight thousand, eight hundred forty-eight".