133772237 has 2 divisors, whose sum is σ = 133772238. Its totient is φ = 133772236.

The previous prime is 133772231. The next prime is 133772263. The reversal of 133772237 is 732277331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116014441 + 17757796 = 10771^2 + 4214^2 .

It is a cyclic number.

It is not a de Polignac number, because 133772237 - 2¹⁰ = 133771213 is a prime.

It is a super-2 number, since 2×133772237² = 35790022783968338, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 133772197 and 133772206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133772231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66886118 + 66886119.

It is an arithmetic number, because the mean of its divisors is an integer number (66886119).

Almost surely, 2^133772237 is an apocalyptic number.

It is an amenable number.

133772237 is a deficient number, since it is larger than the sum of its proper divisors (1).

133772237 is an equidigital number, since it uses as much as digits as its factorization.

133772237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37044, while the sum is 35.

The square root of 133772237 is about 11565.9948556101. The cubic root of 133772237 is about 511.4329010046.

The spelling of 133772237 in words is "one hundred thirty-three million, seven hundred seventy-two thousand, two hundred thirty-seven".