133701261 has 16 divisors (see below), whose sum is σ = 180922560. Its totient is φ = 87816960.

The previous prime is 133701251. The next prime is 133701283. The reversal of 133701261 is 162107331.

It is not a de Polignac number, because 133701261 - 2⁷ = 133701133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133701251) 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, 60270 + ... + 62448.

It is an arithmetic number, because the mean of its divisors is an integer number (11307660).

Almost surely, 2^133701261 is an apocalyptic number.

It is an amenable number.

133701261 is a deficient number, since it is larger than the sum of its proper divisors (47221299).

133701261 is a wasteful number, since it uses less digits than its factorization.

133701261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 133701261 is about 11562.9261434985. The cubic root of 133701261 is about 511.3424340932.

Adding to 133701261 its reverse (162107331), we get a palindrome (295808592).

The spelling of 133701261 in words is "one hundred thirty-three million, seven hundred one thousand, two hundred sixty-one".