20102533 has 8 divisors (see below), whose sum is σ = 22023936. Its totient is φ = 18196800.

The previous prime is 20102527. The next prime is 20102567. The reversal of 20102533 is 33520102.

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 20102533 - 2²¹ = 18005381 is a prime.

It is a super-2 number, since 2×20102533² = 808223666032178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102503) 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, 1141 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (2752992).

Almost surely, 2^20102533 is an apocalyptic number.

It is an amenable number.

20102533 is a deficient number, since it is larger than the sum of its proper divisors (1921403).

20102533 is a wasteful number, since it uses less digits than its factorization.

20102533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7835.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20102533 is about 4483.5848380509. The cubic root of 20102533 is about 271.9048335254.

Adding to 20102533 its reverse (33520102), we get a palindrome (53622635).

Subtracting 20102533 from its reverse (33520102), we obtain a square (13417569 = 3663²).

The spelling of 20102533 in words is "twenty million, one hundred two thousand, five hundred thirty-three".