551140500 has 48 divisors (see below), whose sum is σ = 1604925504. Its totient is φ = 146970400.

The previous prime is 551140427. The next prime is 551140507. The reversal of 551140500 is 5041155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551140507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182214 + ... + 185213.

It is an arithmetic number, because the mean of its divisors is an integer number (33435948).

Almost surely, 2^551140500 is an apocalyptic number.

551140500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551140500 is an abundant number, since it is smaller than the sum of its proper divisors (1053785004).

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

551140500 is a wasteful number, since it uses less digits than its factorization.

551140500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367449 (or 367437 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 551140500 is about 23476.3817484722. The cubic root of 551140500 is about 819.8872043938.

Adding to 551140500 its reverse (5041155), we get a palindrome (556181655).

The spelling of 551140500 in words is "five hundred fifty-one million, one hundred forty thousand, five hundred".