551288100 has 108 divisors (see below), whose sum is σ = 1753363472. Its totient is φ = 133636800.

The previous prime is 551288093. The next prime is 551288107. The reversal of 551288100 is 1882155.

It is an interprime number because it is at equal distance from previous prime (551288093) and next prime (551288107).

It is a super-2 number, since 2×551288100² = 607837138403220000, which contains 22 as substring.

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 (551288107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28707 + ... + 43893.

Almost surely, 2^551288100 is an apocalyptic number.

551288100 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 551288100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876681736).

551288100 is an abundant number, since it is smaller than the sum of its proper divisors (1202075372).

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

551288100 is a wasteful number, since it uses less digits than its factorization.

551288100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15226 (or 15208 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 551288100 is about 23479.5251229662. The cubic root of 551288100 is about 819.9603887270.

The spelling of 551288100 in words is "five hundred fifty-one million, two hundred eighty-eight thousand, one hundred".