55525400 has 96 divisors (see below), whose sum is σ = 156284640. Its totient is φ = 17909760.

The previous prime is 55525399. The next prime is 55525441. The reversal of 55525400 is 452555.

It is a self number, because there is not a number n which added to its sum of digits gives 55525400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22634 + ... + 24966.

It is an arithmetic number, because the mean of its divisors is an integer number (1627965).

Almost surely, 2^55525400 is an apocalyptic number.

55525400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55525400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78142320).

55525400 is an abundant number, since it is smaller than the sum of its proper divisors (100759240).

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

55525400 is a wasteful number, since it uses less digits than its factorization.

55525400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 55525400 is about 7451.5367542541. The cubic root of 55525400 is about 381.5023627013.

Adding to 55525400 its reverse (452555), we get a palindrome (55977955).

The spelling of 55525400 in words is "fifty-five million, five hundred twenty-five thousand, four hundred".