133516641 has 16 divisors (see below), whose sum is σ = 180468288. Its totient is φ = 87796800.

The previous prime is 133516631. The next prime is 133516661. The reversal of 133516641 is 146615331.

It is not a de Polignac number, because 133516641 - 2¹⁷ = 133385569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133516599 and 133516608.

It is not an unprimeable number, because it can be changed into a prime (133516601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70195 + ... + 72071.

It is an arithmetic number, because the mean of its divisors is an integer number (11279268).

Almost surely, 2^133516641 is an apocalyptic number.

It is an amenable number.

133516641 is a deficient number, since it is larger than the sum of its proper divisors (46951647).

133516641 is a wasteful number, since it uses less digits than its factorization.

133516641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192.

The product of its digits is 6480, while the sum is 30.

The square root of 133516641 is about 11554.9401123502. The cubic root of 133516641 is about 511.1069650455.

The spelling of 133516641 in words is "one hundred thirty-three million, five hundred sixteen thousand, six hundred forty-one".