551342100 has 72 divisors (see below), whose sum is σ = 1601647488. Its totient is φ = 146432000.

The previous prime is 551342059. The next prime is 551342107. The reversal of 551342100 is 1243155.

It is a super-2 number, since 2×551342100² = 607956222464820000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551342107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73525 + ... + 80675.

It is an arithmetic number, because the mean of its divisors is an integer number (22245104).

Almost surely, 2^551342100 is an apocalyptic number.

551342100 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 551342100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (800823744).

551342100 is an abundant number, since it is smaller than the sum of its proper divisors (1050305388).

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

551342100 is a wasteful number, since it uses less digits than its factorization.

551342100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7425 (or 7418 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 551342100 is about 23480.6750328861. The cubic root of 551342100 is about 819.9871602193.

Adding to 551342100 its reverse (1243155), we get a palindrome (552585255).

The spelling of 551342100 in words is "five hundred fifty-one million, three hundred forty-two thousand, one hundred".