551725500 has 96 divisors (see below), whose sum is σ = 1650212928. Its totient is φ = 143136000.

The previous prime is 551725457. The next prime is 551725511. The reversal of 551725500 is 5527155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent 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, 50530 + ... + 60470.

It is an arithmetic number, because the mean of its divisors is an integer number (17189718).

Almost surely, 2^551725500 is an apocalyptic number.

551725500 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 551725500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825106464).

551725500 is an abundant number, since it is smaller than the sum of its proper divisors (1098487428).

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

551725500 is a wasteful number, since it uses less digits than its factorization.

551725500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000 (or 9988 counting only the distinct ones).

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 551725500 is about 23488.8377745686. The cubic root of 551725500 is about 820.1771875678.

The spelling of 551725500 in words is "five hundred fifty-one million, seven hundred twenty-five thousand, five hundred".