51058656 has 144 divisors (see below), whose sum is σ = 161336448. Its totient is φ = 15187200.

The previous prime is 51058649. The next prime is 51058669. The reversal of 51058656 is 65685015.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a self number, because there is not a number n which added to its sum of digits gives 51058656.

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, 224815 + ... + 225041.

It is an arithmetic number, because the mean of its divisors is an integer number (1120392).

Almost surely, 2^51058656 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 51058656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80668224).

51058656 is an abundant number, since it is smaller than the sum of its proper divisors (110277792).

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

51058656 is a wasteful number, since it uses less digits than its factorization.

51058656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 51058656 is about 7145.5339898429. The cubic root of 51058656 is about 370.9850934743.

The spelling of 51058656 in words is "fifty-one million, fifty-eight thousand, six hundred fifty-six".