133756465 has 4 divisors (see below), whose sum is σ = 160507764. Its totient is φ = 107005168.

The previous prime is 133756463. The next prime is 133756573. The reversal of 133756465 is 564657331.

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 23590449 + 110166016 = 4857^2 + 10496^2 .

It is a cyclic number.

It is not a de Polignac number, because 133756465 - 2¹ = 133756463 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133756463) 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 in 3 ways as a sum of consecutive naturals, for example, 13375642 + ... + 13375651.

It is an arithmetic number, because the mean of its divisors is an integer number (40126941).

Almost surely, 2^133756465 is an apocalyptic number.

It is an amenable number.

133756465 is a deficient number, since it is larger than the sum of its proper divisors (26751299).

133756465 is an equidigital number, since it uses as much as digits as its factorization.

133756465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26751298.

The product of its digits is 226800, while the sum is 40.

The square root of 133756465 is about 11565.3130091667. The cubic root of 133756465 is about 511.4128005788.

The spelling of 133756465 in words is "one hundred thirty-three million, seven hundred fifty-six thousand, four hundred sixty-five".