51502806 has 48 divisors (see below), whose sum is σ = 120360240. Its totient is φ = 15863040.

The previous prime is 51502799. The next prime is 51502813. The reversal of 51502806 is 60820515.

It is an interprime number because it is at equal distance from previous prime (51502799) and next prime (51502813).

It is a self number, because there is not a number n which added to its sum of digits gives 51502806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12186 + ... + 15858.

It is an arithmetic number, because the mean of its divisors is an integer number (2507505).

Almost surely, 2^51502806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51502806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60180120).

51502806 is an abundant number, since it is smaller than the sum of its proper divisors (68857434).

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

51502806 is a wasteful number, since it uses less digits than its factorization.

51502806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741 (or 3738 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 51502806 is about 7176.5455478245. The cubic root of 51502806 is about 372.0577000335.

The spelling of 51502806 in words is "fifty-one million, five hundred two thousand, eight hundred six".