55964238 has 64 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 15436800.

The previous prime is 55964231. The next prime is 55964243. The reversal of 55964238 is 83246955.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55964238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55964231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33978 + ... + 35586.

It is an arithmetic number, because the mean of its divisors is an integer number (2086560).

Almost surely, 2^55964238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55964238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66769920).

55964238 is an abundant number, since it is smaller than the sum of its proper divisors (77575602).

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

55964238 is a wasteful number, since it uses less digits than its factorization.

55964238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673.

The product of its digits is 259200, while the sum is 42.

The square root of 55964238 is about 7480.9249428129. The cubic root of 55964238 is about 382.5047784443.

The spelling of 55964238 in words is "fifty-five million, nine hundred sixty-four thousand, two hundred thirty-eight".