51205008 has 40 divisors (see below), whose sum is σ = 133576768. Its totient is φ = 16900992.

The previous prime is 51205001. The next prime is 51205027. The reversal of 51205008 is 80050215.

It is not an unprimeable number, because it can be changed into a prime (51205001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235 + ... + 10122.

Almost surely, 2^51205008 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 51205008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66788384).

51205008 is an abundant number, since it is smaller than the sum of its proper divisors (82371760).

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

51205008 is a wasteful number, since it uses less digits than its factorization.

51205008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10471 (or 10465 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 51205008 is about 7155.7674640810. The cubic root of 51205008 is about 371.3392131052.

The spelling of 51205008 in words is "fifty-one million, two hundred five thousand, eight".