133477237 has 2 divisors, whose sum is σ = 133477238. Its totient is φ = 133477236.

The previous prime is 133477193. The next prime is 133477249. The reversal of 133477237 is 732774331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131194116 + 2283121 = 11454^2 + 1511^2 .

It is an emirp because it is prime and its reverse (732774331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133477237 - 2¹⁵ = 133444469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133477196 and 133477205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133477297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66738618 + 66738619.

It is an arithmetic number, because the mean of its divisors is an integer number (66738619).

Almost surely, 2^133477237 is an apocalyptic number.

It is an amenable number.

133477237 is a deficient number, since it is larger than the sum of its proper divisors (1).

133477237 is an equidigital number, since it uses as much as digits as its factorization.

133477237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 37.

The square root of 133477237 is about 11553.2349149491. The cubic root of 133477237 is about 511.0566800766.

The spelling of 133477237 in words is "one hundred thirty-three million, four hundred seventy-seven thousand, two hundred thirty-seven".