133972301 has 16 divisors (see below), whose sum is σ = 140746224. Its totient is φ = 127401984.

The previous prime is 133972283. The next prime is 133972313. The reversal of 133972301 is 103279331.

133972301 = 386² + 387² + ... + 771².

It can be written as a sum of positive squares in 8 ways, for example, as 26020201 + 107952100 = 5101^2 + 10390^2 .

It is a cyclic number.

It is not a de Polignac number, because 133972301 - 2²⁶ = 66863437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133972351) 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, 521165 + ... + 521421.

It is an arithmetic number, because the mean of its divisors is an integer number (8796639).

Almost surely, 2^133972301 is an apocalyptic number.

It is an amenable number.

133972301 is a deficient number, since it is larger than the sum of its proper divisors (6773923).

133972301 is a wasteful number, since it uses less digits than its factorization.

133972301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 133972301 is about 11574.6404263804. The cubic root of 133972301 is about 511.6877330196.

The spelling of 133972301 in words is "one hundred thirty-three million, nine hundred seventy-two thousand, three hundred one".