51025008 has 80 divisors (see below), whose sum is σ = 138848256. Its totient is φ = 16124160.

The previous prime is 51025003. The next prime is 51025021. The reversal of 51025008 is 80052015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51025003) 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, 78541 + ... + 79187.

Almost surely, 2^51025008 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 51025008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69424128).

51025008 is an abundant number, since it is smaller than the sum of its proper divisors (87823248).

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

51025008 is a wasteful number, since it uses less digits than its factorization.

51025008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 736 counting only the distinct ones).

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

The square root of 51025008 is about 7143.1791241715. The cubic root of 51025008 is about 370.9035816699.

The spelling of 51025008 in words is "fifty-one million, twenty-five thousand, eight".