56651000 has 64 divisors (see below), whose sum is σ = 151519680. Its totient is φ = 19420800.

The previous prime is 56650991. The next prime is 56651003. The reversal of 56651000 is 15665.

56651000 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 (56651003) 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, 2954 + ... + 11046.

It is an arithmetic number, because the mean of its divisors is an integer number (2367495).

Almost surely, 2^56651000 is an apocalyptic number.

56651000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56651000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75759840).

56651000 is an abundant number, since it is smaller than the sum of its proper divisors (94868680).

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

56651000 is a wasteful number, since it uses less digits than its factorization.

56651000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8121 (or 8107 counting only the distinct ones).

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

The square root of 56651000 is about 7526.6858576667. The cubic root of 56651000 is about 384.0630502662.

Adding to 56651000 its reverse (15665), we get a palindrome (56666665).

The spelling of 56651000 in words is "fifty-six million, six hundred fifty-one thousand".