55622736 has 120 divisors (see below), whose sum is σ = 171787616. Its totient is φ = 16692480.

The previous prime is 55622713. The next prime is 55622737. The reversal of 55622736 is 63722655.

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 55622736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55622737) 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 23 ways as a sum of consecutive naturals, for example, 80151 + ... + 80841.

Almost surely, 2^55622736 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 55622736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85893808).

55622736 is an abundant number, since it is smaller than the sum of its proper divisors (116164880).

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

55622736 is a wasteful number, since it uses less digits than its factorization.

55622736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 752 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 55622736 is about 7458.0651646389. The cubic root of 55622736 is about 381.7251570532.

The spelling of 55622736 in words is "fifty-five million, six hundred twenty-two thousand, seven hundred thirty-six".