651056 has 20 divisors (see below), whose sum is σ = 1441872. Its totient is φ = 278976.

The previous prime is 651043. The next prime is 651067. The reversal of 651056 is 650156.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 651056.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2795 + ... + 3018.

2⁶⁵¹⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

651056 is an abundant number, since it is smaller than the sum of its proper divisors (790816).

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

651056 is a wasteful number, since it uses less digits than its factorization.

651056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5828 (or 5822 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 651056 is about 806.8804124528. The cubic root of 651056 is about 86.6707953326.

Subtracting from 651056 its reverse (650156), we obtain a square (900 = 30²).

The spelling of 651056 in words is "six hundred fifty-one thousand, fifty-six".