145224833 has 8 divisors (see below), whose sum is σ = 156849000. Its totient is φ = 133665408.

The previous prime is 145224797. The next prime is 145224853. The reversal of 145224833 is 338422541.

It can be written as a sum of positive squares in 4 ways, for example, as 552049 + 144672784 = 743^2 + 12028^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145224833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145224833.

It is not an unprimeable number, because it can be changed into a prime (145224853) 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, 11468 + ... + 20541.

It is an arithmetic number, because the mean of its divisors is an integer number (19606125).

Almost surely, 2^145224833 is an apocalyptic number.

145224833 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145224833 is a deficient number, since it is larger than the sum of its proper divisors (11624167).

145224833 is a wasteful number, since it uses less digits than its factorization.

145224833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32371.

The product of its digits is 23040, while the sum is 32.

The square root of 145224833 is about 12050.9266448684. The cubic root of 145224833 is about 525.6301826391.

The spelling of 145224833 in words is "one hundred forty-five million, two hundred twenty-four thousand, eight hundred thirty-three".