551103451500 has 96 divisors (see below), whose sum is σ = 1834072321536. Its totient is φ = 125966500800.

The previous prime is 551103451469. The next prime is 551103451501. The reversal of 551103451500 is 5154301155.

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

It is not an unprimeable number, because it can be changed into a prime (551103451501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26232522 + ... + 26253521.

It is an arithmetic number, because the mean of its divisors is an integer number (19104920016).

Almost surely, 2^551103451500 is an apocalyptic number.

551103451500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551103451500 is an abundant number, since it is smaller than the sum of its proper divisors (1282968870036).

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

551103451500 is a wasteful number, since it uses less digits than its factorization.

551103451500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52486072 (or 52486060 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

Adding to 551103451500 its reverse (5154301155), we get a palindrome (556257752655).

The spelling of 551103451500 in words is "five hundred fifty-one billion, one hundred three million, four hundred fifty-one thousand, five hundred".