55610646 has 64 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 14558976.

The previous prime is 55610641. The next prime is 55610647. The reversal of 55610646 is 64601655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55610641) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 97450 + ... + 98018.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^55610646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55610646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68947200).

55610646 is an abundant number, since it is smaller than the sum of its proper divisors (82283754).

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

55610646 is a wasteful number, since it uses less digits than its factorization.

55610646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 55610646 is about 7457.2545886539. The cubic root of 55610646 is about 381.6974981503.

The spelling of 55610646 in words is "fifty-five million, six hundred ten thousand, six hundred forty-six".