100551550 has 24 divisors (see below), whose sum is σ = 204029352. Its totient is φ = 36564000.

The previous prime is 100551541. The next prime is 100551551. The reversal of 100551550 is 55155001.

It is a super-2 number, since 2×100551550² = 20221228414805000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100551551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90861 + ... + 91960.

It is an arithmetic number, because the mean of its divisors is an integer number (8501223).

Almost surely, 2^100551550 is an apocalyptic number.

100551550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100551550 is an abundant number, since it is smaller than the sum of its proper divisors (103477802).

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

100551550 is a wasteful number, since it uses less digits than its factorization.

100551550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182844 (or 182839 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 100551550 is about 10027.5395785806. The cubic root of 100551550 is about 465.0106753629.

It can be divided in two parts, 100551 and 550, that added together give a palindrome (101101).

The spelling of 100551550 in words is "one hundred million, five hundred fifty-one thousand, five hundred fifty".