55644498 has 144 divisors (see below), whose sum is σ = 158348736. Its totient is φ = 13970880.

The previous prime is 55644487. The next prime is 55644499. The reversal of 55644498 is 89444655.

55644498 is a `hidden beast` number, since 556 + 4 + 4 + 4 + 98 = 666.

It is not an unprimeable number, because it can be changed into a prime (55644499) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 263613 + ... + 263823.

It is an arithmetic number, because the mean of its divisors is an integer number (1099644).

Almost surely, 2^55644498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55644498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79174368).

55644498 is an abundant number, since it is smaller than the sum of its proper divisors (102704238).

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

55644498 is a wasteful number, since it uses less digits than its factorization.

55644498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 259 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 55644498 is about 7459.5239794507. The cubic root of 55644498 is about 381.7749329801.

It can be divided in two parts, 556 and 44498, that added together give a palindrome (45054).

The spelling of 55644498 in words is "fifty-five million, six hundred forty-four thousand, four hundred ninety-eight".