121528533 has 16 divisors (see below), whose sum is σ = 186023936. Its totient is φ = 69130800.

The previous prime is 121528507. The next prime is 121528543. The reversal of 121528533 is 335825121.

It is not a de Polignac number, because 121528533 - 2⁵ = 121528501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121528533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121528543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8293 + ... + 17658.

It is an arithmetic number, because the mean of its divisors is an integer number (11626496).

Almost surely, 2^121528533 is an apocalyptic number.

It is an amenable number.

121528533 is a deficient number, since it is larger than the sum of its proper divisors (64495403).

121528533 is a wasteful number, since it uses less digits than its factorization.

121528533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26184.

The product of its digits is 7200, while the sum is 30.

The square root of 121528533 is about 11023.9980497096. The cubic root of 121528533 is about 495.3278554478.

The spelling of 121528533 in words is "one hundred twenty-one million, five hundred twenty-eight thousand, five hundred thirty-three".