51842808 has 64 divisors (see below), whose sum is σ = 144612000. Its totient is φ = 17208576.

The previous prime is 51842801. The next prime is 51842837. The reversal of 51842808 is 80824815.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51842801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83716 + ... + 84332.

Almost surely, 2^51842808 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 51842808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72306000).

51842808 is an abundant number, since it is smaller than the sum of its proper divisors (92769192).

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

51842808 is a wasteful number, since it uses less digits than its factorization.

51842808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 51842808 is about 7200.1949973594. The cubic root of 51842808 is about 372.8746329300.

It can be divided in two parts, 51842 and 808, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 51842808 in words is "fifty-one million, eight hundred forty-two thousand, eight hundred eight".