133222545 has 24 divisors (see below), whose sum is σ = 231567336. Its totient is φ = 70852608.

The previous prime is 133222543. The next prime is 133222559. The reversal of 133222545 is 545222331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54154881 + 79067664 = 7359^2 + 8892^2 .

It is not a de Polignac number, because 133222545 - 2¹ = 133222543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133222541) 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 23 ways as a sum of consecutive naturals, for example, 12817 + ... + 20753.

It is an arithmetic number, because the mean of its divisors is an integer number (9648639).

Almost surely, 2^133222545 is an apocalyptic number.

133222545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133222545 is a deficient number, since it is larger than the sum of its proper divisors (98344791).

133222545 is a wasteful number, since it uses less digits than its factorization.

133222545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321 (or 8318 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 133222545 is about 11542.2071112937. The cubic root of 133222545 is about 510.7314188124.

Adding to 133222545 its reverse (545222331), we get a palindrome (678444876).

The spelling of 133222545 in words is "one hundred thirty-three million, two hundred twenty-two thousand, five hundred forty-five".