55612656 has 200 divisors, whose sum is σ = 181488384. Its totient is φ = 16295040.

The previous prime is 55612621. The next prime is 55612657. The reversal of 55612656 is 65621655.

It is a happy number.

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 55612656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55612657) 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 39 ways as a sum of consecutive naturals, for example, 669991 + ... + 670073.

Almost surely, 2^55612656 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 55612656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90744192).

55612656 is an abundant number, since it is smaller than the sum of its proper divisors (125875728).

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

55612656 is a wasteful number, since it uses less digits than its factorization.

55612656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 146 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 55612656 is about 7457.3893555319. The cubic root of 55612656 is about 381.7020968065.

The spelling of 55612656 in words is "fifty-five million, six hundred twelve thousand, six hundred fifty-six".