100551630 has 64 divisors (see below), whose sum is σ = 257748480. Its totient is φ = 25044096.

The previous prime is 100551611. The next prime is 100551641. The reversal of 100551630 is 36155001.

It is a happy number.

It is a super-2 number, since 2×100551630² = 20221260591313800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100551597 and 100551606.

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, 27976 + ... + 31364.

It is an arithmetic number, because the mean of its divisors is an integer number (4027320).

Almost surely, 2^100551630 is an apocalyptic number.

100551630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100551630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128874240).

100551630 is an abundant number, since it is smaller than the sum of its proper divisors (157196850).

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

100551630 is a wasteful number, since it uses less digits than its factorization.

100551630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 100551630 is about 10027.5435675942. The cubic root of 100551630 is about 465.0107986855.

The spelling of 100551630 in words is "one hundred million, five hundred fifty-one thousand, six hundred thirty".