55302500 has 60 divisors (see below), whose sum is σ = 131995248. Its totient is φ = 20100000.

The previous prime is 55302493. The next prime is 55302517. The reversal of 55302500 is 520355.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26495 + ... + 28505.

Almost surely, 2^55302500 is an apocalyptic number.

55302500 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 55302500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65997624).

55302500 is an abundant number, since it is smaller than the sum of its proper divisors (76692748).

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

55302500 is a wasteful number, since it uses less digits than its factorization.

55302500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046 (or 2029 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 55302500 is about 7436.5650672875. The cubic root of 55302500 is about 380.9911797041.

Adding to 55302500 its reverse (520355), we get a palindrome (55822855).

The spelling of 55302500 in words is "fifty-five million, three hundred two thousand, five hundred".