100530553 has 4 divisors (see below), whose sum is σ = 100554148. Its totient is φ = 100506960.

The previous prime is 100530541. The next prime is 100530557. The reversal of 100530553 is 355035001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66389904 + 34140649 = 8148^2 + 5843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100530553 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 3426 + ... + 14587.

It is an arithmetic number, because the mean of its divisors is an integer number (25138537).

Almost surely, 2^100530553 is an apocalyptic number.

It is an amenable number.

100530553 is a deficient number, since it is larger than the sum of its proper divisors (23595).

100530553 is an equidigital number, since it uses as much as digits as its factorization.

100530553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23594.

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 100530553 is about 10026.4925572206. The cubic root of 100530553 is about 464.9783055358.

Adding to 100530553 its reverse (355035001), we get a palindrome (455565554).

The spelling of 100530553 in words is "one hundred million, five hundred thirty thousand, five hundred fifty-three".