133540015 has 32 divisors (see below), whose sum is σ = 195886080. Its totient is φ = 85307904.

The previous prime is 133540013. The next prime is 133540031. The reversal of 133540015 is 510045331.

It is a happy number.

It is not a de Polignac number, because 133540015 - 2¹ = 133540013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133540013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60196 + ... + 62374.

It is an arithmetic number, because the mean of its divisors is an integer number (6121440).

Almost surely, 2^133540015 is an apocalyptic number.

133540015 is a deficient number, since it is larger than the sum of its proper divisors (62346065).

133540015 is a wasteful number, since it uses less digits than its factorization.

133540015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 133540015 is about 11555.9514969560. The cubic root of 133540015 is about 511.1367888363.

Adding to 133540015 its reverse (510045331), we get a palindrome (643585346).

The spelling of 133540015 in words is "one hundred thirty-three million, five hundred forty thousand, fifteen".