133857485 has 8 divisors (see below), whose sum is σ = 163262616. Its totient is φ = 105330240.

The previous prime is 133857463. The next prime is 133857499. The reversal of 133857485 is 584758331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 708964 + 133148521 = 842^2 + 11539^2 .

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

It is not a de Polignac number, because 133857485 - 2¹⁶ = 133791949 is a prime.

It is a Duffinian number.

It is a congruent 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, 219134 + ... + 219743.

It is an arithmetic number, because the mean of its divisors is an integer number (20407827).

Almost surely, 2^133857485 is an apocalyptic number.

It is an amenable number.

133857485 is a deficient number, since it is larger than the sum of its proper divisors (29405131).

133857485 is an equidigital number, since it uses as much as digits as its factorization.

133857485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438943.

The product of its digits is 403200, while the sum is 44.

The square root of 133857485 is about 11569.6795547673. The cubic root of 133857485 is about 511.5415169001.

The spelling of 133857485 in words is "one hundred thirty-three million, eight hundred fifty-seven thousand, four hundred eighty-five".