55425000 has 96 divisors (see below), whose sum is σ = 173426400. Its totient is φ = 14760000.

The previous prime is 55424987. The next prime is 55425011. The reversal of 55425000 is 52455.

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, 74631 + ... + 75369.

It is an arithmetic number, because the mean of its divisors is an integer number (1806525).

Almost surely, 2^55425000 is an apocalyptic number.

55425000 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 55425000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86713200).

55425000 is an abundant number, since it is smaller than the sum of its proper divisors (118001400).

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

55425000 is an equidigital number, since it uses as much as digits as its factorization.

55425000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 55425000 is about 7444.7968407472. The cubic root of 55425000 is about 381.2722821340.

Adding to 55425000 its reverse (52455), we get a palindrome (55477455).

The spelling of 55425000 in words is "fifty-five million, four hundred twenty-five thousand".