51025656 has 64 divisors (see below), whose sum is σ = 139812480. Its totient is φ = 15390080.

The previous prime is 51025651. The next prime is 51025673. The reversal of 51025656 is 65652015.

51025656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51025651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91330 + ... + 91886.

It is an arithmetic number, because the mean of its divisors is an integer number (2184570).

Almost surely, 2^51025656 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 51025656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69906240).

51025656 is an abundant number, since it is smaller than the sum of its proper divisors (88786824).

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

51025656 is a wasteful number, since it uses less digits than its factorization.

51025656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 51025656 is about 7143.2244819829. The cubic root of 51025656 is about 370.9051517791.

It can be divided in two parts, 51025 and 656, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 51025656 in words is "fifty-one million, twenty-five thousand, six hundred fifty-six".