202145533 has 2 divisors, whose sum is σ = 202145534. Its totient is φ = 202145532.

The previous prime is 202145527. The next prime is 202145549. The reversal of 202145533 is 335541202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146821689 + 55323844 = 12117^2 + 7438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202145533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202145498 and 202145507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202145563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101072766 + 101072767.

It is an arithmetic number, because the mean of its divisors is an integer number (101072767).

Almost surely, 2^202145533 is an apocalyptic number.

It is an amenable number.

202145533 is a deficient number, since it is larger than the sum of its proper divisors (1).

202145533 is an equidigital number, since it uses as much as digits as its factorization.

202145533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 202145533 is about 14217.7893147986. The cubic root of 202145533 is about 586.8873062066.

Adding to 202145533 its reverse (335541202), we get a palindrome (537686735).

The spelling of 202145533 in words is "two hundred two million, one hundred forty-five thousand, five hundred thirty-three".