100720533 has 8 divisors (see below), whose sum is σ = 135624096. Its totient is φ = 66482000.

The previous prime is 100720531. The next prime is 100720553. The reversal of 100720533 is 335027001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100720533 - 2¹ = 100720531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100720531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165903 + ... + 166508.

It is an arithmetic number, because the mean of its divisors is an integer number (16953012).

Almost surely, 2^100720533 is an apocalyptic number.

It is an amenable number.

100720533 is a deficient number, since it is larger than the sum of its proper divisors (34903563).

100720533 is a wasteful number, since it uses less digits than its factorization.

100720533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332515.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 100720533 is about 10035.9619867754. The cubic root of 100720533 is about 465.2710224888.

Adding to 100720533 its reverse (335027001), we get a palindrome (435747534).

The spelling of 100720533 in words is "one hundred million, seven hundred twenty thousand, five hundred thirty-three".