133544513 has 2 divisors, whose sum is σ = 133544514. Its totient is φ = 133544512.

The previous prime is 133544461. The next prime is 133544519. The reversal of 133544513 is 315445331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107910544 + 25633969 = 10388^2 + 5063^2 .

It is an emirp because it is prime and its reverse (315445331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133544513 - 2¹⁶ = 133478977 is a prime.

It is not a weakly prime, because it can be changed into another prime (133544519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66772256 + 66772257.

It is an arithmetic number, because the mean of its divisors is an integer number (66772257).

Almost surely, 2^133544513 is an apocalyptic number.

It is an amenable number.

133544513 is a deficient number, since it is larger than the sum of its proper divisors (1).

133544513 is an equidigital number, since it uses as much as digits as its factorization.

133544513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 133544513 is about 11556.1461136488. The cubic root of 133544513 is about 511.1425276092.

Adding to 133544513 its reverse (315445331), we get a palindrome (448989844).

The spelling of 133544513 in words is "one hundred thirty-three million, five hundred forty-four thousand, five hundred thirteen".