55539406224 has 135 divisors (see below), whose sum is σ = 159650014849. Its totient is φ = 18023888640.

The previous prime is 55539406201. The next prime is 55539406229. The reversal of 55539406224 is 42260493555.

The square root of 55539406224 is 235668.

It is a perfect power (a square), and thus also a powerful number.

55539406224 is a `hidden beast` number, since 5 + 553 + 94 + 0 + 6 + 2 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2676199824 + 52863206400 = 51732^2 + 229920^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55539406224.

It is not an unprimeable number, because it can be changed into a prime (55539406229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 115948417 + ... + 115948895.

Almost surely, 2^55539406224 is an apocalyptic number.

55539406224 is the 235668-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55539406224

55539406224 is an abundant number, since it is smaller than the sum of its proper divisors (104110608625).

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

55539406224 is an equidigital number, since it uses as much as digits as its factorization.

55539406224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

Adding to 55539406224 its reverse (42260493555), we get a palindrome (97799899779).

It can be divided in two parts, 5553940 and 6224, that added together give a square (5560164 = 2358²).

The spelling of 55539406224 in words is "fifty-five billion, five hundred thirty-nine million, four hundred six thousand, two hundred twenty-four".