100530551 has 12 divisors (see below), whose sum is σ = 114069312. Its totient is φ = 88440000.

The previous prime is 100530541. The next prime is 100530557. The reversal of 100530551 is 155035001.

It is a happy number.

It is not a de Polignac number, because 100530551 - 2⁶ = 100530487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100530557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9650 + ... + 17151.

It is an arithmetic number, because the mean of its divisors is an integer number (9505776).

Almost surely, 2^100530551 is an apocalyptic number.

100530551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100530551 is a deficient number, since it is larger than the sum of its proper divisors (13538761).

100530551 is a wasteful number, since it uses less digits than its factorization.

100530551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26854 (or 26843 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 100530551 is about 10026.4924574848. The cubic root of 100530551 is about 464.9783024523.

Adding to 100530551 its reverse (155035001), we get a palindrome (255565552).

The spelling of 100530551 in words is "one hundred million, five hundred thirty thousand, five hundred fifty-one".