100009550 has 24 divisors (see below), whose sum is σ = 186818400. Its totient is φ = 39831680.

The previous prime is 100009549. The next prime is 100009573. The reversal of 100009550 is 55900001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7766 + ... + 16134.

It is an arithmetic number, because the mean of its divisors is an integer number (7784100).

Almost surely, 2^100009550 is an apocalyptic number.

100009550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100009550 is a deficient number, since it is larger than the sum of its proper divisors (86808850).

100009550 is a wasteful number, since it uses less digits than its factorization.

100009550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620 (or 8615 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 100009550 is about 10000.4774886002. The cubic root of 100009550 is about 464.1736586154.

Adding to 100009550 its reverse (55900001), we get a palindrome (155909551).

The spelling of 100009550 in words is "one hundred million, nine thousand, five hundred fifty".