55634436 has 144 divisors (see below), whose sum is σ = 168412608. Its totient is φ = 15264000.

The previous prime is 55634399. The next prime is 55634437. The reversal of 55634436 is 63443655.

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 55634436.

It is not an unprimeable number, because it can be changed into a prime (55634437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 519895 + ... + 520001.

It is an arithmetic number, because the mean of its divisors is an integer number (1169532).

Almost surely, 2^55634436 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 55634436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84206304).

55634436 is an abundant number, since it is smaller than the sum of its proper divisors (112778172).

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

55634436 is a wasteful number, since it uses less digits than its factorization.

55634436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 237 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 55634436 is about 7458.8495091401. The cubic root of 55634436 is about 381.7519199176.

It can be divided in two parts, 5563 and 4436, that added together give a palindrome (9999).

The spelling of 55634436 in words is "fifty-five million, six hundred thirty-four thousand, four hundred thirty-six".