145502033 has 4 divisors (see below), whose sum is σ = 146240820. Its totient is φ = 144763248.

The previous prime is 145501999. The next prime is 145502039. The reversal of 145502033 is 330205541.

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 104182849 + 41319184 = 10207^2 + 6428^2 .

It is a cyclic number.

It is not a de Polignac number, because 145502033 - 2⁸ = 145501777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145502039) 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 3 ways as a sum of consecutive naturals, for example, 369098 + ... + 369491.

It is an arithmetic number, because the mean of its divisors is an integer number (36560205).

Almost surely, 2^145502033 is an apocalyptic number.

It is an amenable number.

145502033 is a deficient number, since it is larger than the sum of its proper divisors (738787).

145502033 is an equidigital number, since it uses as much as digits as its factorization.

145502033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738786.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 145502033 is about 12062.4223520817. The cubic root of 145502033 is about 525.9644048161.

Adding to 145502033 its reverse (330205541), we get a palindrome (475707574).

The spelling of 145502033 in words is "one hundred forty-five million, five hundred two thousand, thirty-three".