100551000 has 192 divisors, whose sum is σ = 346076640. Its totient is φ = 24288000.

The previous prime is 100550999. The next prime is 100551029. The reversal of 100551000 is 155001.

It is a super-2 number, since 2×100551000² = 20221007202000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 362862 + ... + 363138.

Almost surely, 2^100551000 is an apocalyptic number.

100551000 is a gapful number since it is divisible by the number (10) 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 100551000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173038320).

100551000 is an abundant number, since it is smaller than the sum of its proper divisors (245525640).

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

100551000 is a wasteful number, since it uses less digits than its factorization.

100551000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 100551000 is about 10027.5121540689. The cubic root of 100551000 is about 465.0098275180.

The spelling of 100551000 in words is "one hundred million, five hundred fifty-one thousand".