133279537 has 2 divisors, whose sum is σ = 133279538. Its totient is φ = 133279536.

The previous prime is 133279493. The next prime is 133279543. The reversal of 133279537 is 735972331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103205281 + 30074256 = 10159^2 + 5484^2 .

It is a cyclic number.

It is not a de Polignac number, because 133279537 - 2¹⁵ = 133246769 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133279537.

It is not a weakly prime, because it can be changed into another prime (133277537) 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, 66639768 + 66639769.

It is an arithmetic number, because the mean of its divisors is an integer number (66639769).

Almost surely, 2^133279537 is an apocalyptic number.

It is an amenable number.

133279537 is a deficient number, since it is larger than the sum of its proper divisors (1).

133279537 is an equidigital number, since it uses as much as digits as its factorization.

133279537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 40.

The square root of 133279537 is about 11544.6756992130. The cubic root of 133279537 is about 510.8042379570.

The spelling of 133279537 in words is "one hundred thirty-three million, two hundred seventy-nine thousand, five hundred thirty-seven".