133511485 has 4 divisors (see below), whose sum is σ = 160213788. Its totient is φ = 106809184.

The previous prime is 133511449. The next prime is 133511519. The reversal of 133511485 is 584115331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584115331 = 2243 ⋅260417.

It can be written as a sum of positive squares in 2 ways, for example, as 97259044 + 36252441 = 9862^2 + 6021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133511485 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 3 ways as a sum of consecutive naturals, for example, 13351144 + ... + 13351153.

It is an arithmetic number, because the mean of its divisors is an integer number (40053447).

Almost surely, 2^133511485 is an apocalyptic number.

It is an amenable number.

133511485 is a deficient number, since it is larger than the sum of its proper divisors (26702303).

133511485 is an equidigital number, since it uses as much as digits as its factorization.

133511485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26702302.

The product of its digits is 7200, while the sum is 31.

The square root of 133511485 is about 11554.7170021598. The cubic root of 133511485 is about 511.1003858370.

The spelling of 133511485 in words is "one hundred thirty-three million, five hundred eleven thousand, four hundred eighty-five".