55234520 has 64 divisors (see below), whose sum is σ = 142732800. Its totient is φ = 19025280.

The previous prime is 55234493. The next prime is 55234583. The reversal of 55234520 is 2543255.

It is a self number, because there is not a number n which added to its sum of digits gives 55234520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5057 + ... + 11663.

It is an arithmetic number, because the mean of its divisors is an integer number (2230200).

Almost surely, 2^55234520 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 55234520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71366400).

55234520 is an abundant number, since it is smaller than the sum of its proper divisors (87498280).

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

55234520 is a wasteful number, since it uses less digits than its factorization.

55234520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6648 (or 6644 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 55234520 is about 7431.9930032260. The cubic root of 55234520 is about 380.8350059326.

Adding to 55234520 its reverse (2543255), we get a palindrome (57777775).

The spelling of 55234520 in words is "fifty-five million, two hundred thirty-four thousand, five hundred twenty".