55525250 has 64 divisors (see below), whose sum is σ = 115599744. Its totient is φ = 19800000.

The previous prime is 55525241. The next prime is 55525273. The reversal of 55525250 is 5252555.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167585 + ... + 167915.

It is an arithmetic number, because the mean of its divisors is an integer number (1806246).

Almost surely, 2^55525250 is an apocalyptic number.

55525250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55525250 is an abundant number, since it is smaller than the sum of its proper divisors (60074494).

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

55525250 is a wasteful number, since it uses less digits than its factorization.

55525250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 55525250 is about 7451.5266892094. The cubic root of 55525250 is about 381.5020191624.

It can be divided in two parts, 5 and 5525250, that added together give a palindrome (5525255).

The spelling of 55525250 in words is "fifty-five million, five hundred twenty-five thousand, two hundred fifty".