133523465 has 8 divisors (see below), whose sum is σ = 160315848. Its totient is φ = 106760320.

The previous prime is 133523459. The next prime is 133523473. The reversal of 133523465 is 564325331.

It can be written as a sum of positive squares in 4 ways, for example, as 56505289 + 77018176 = 7517^2 + 8776^2 .

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

It is not a de Polignac number, because 133523465 - 2²⁴ = 116746249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4469 + ... + 16941.

It is an arithmetic number, because the mean of its divisors is an integer number (20039481).

Almost surely, 2^133523465 is an apocalyptic number.

It is an amenable number.

133523465 is a deficient number, since it is larger than the sum of its proper divisors (26792383).

133523465 is a wasteful number, since it uses less digits than its factorization.

133523465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14619.

The product of its digits is 32400, while the sum is 32.

The square root of 133523465 is about 11555.2353935348. The cubic root of 133523465 is about 511.1156724108.

Adding to 133523465 its reverse (564325331), we get a palindrome (697848796).

The spelling of 133523465 in words is "one hundred thirty-three million, five hundred twenty-three thousand, four hundred sixty-five".