133437461 has 2 divisors, whose sum is σ = 133437462. Its totient is φ = 133437460.

The previous prime is 133437449. The next prime is 133437511. The reversal of 133437461 is 164734331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119224561 + 14212900 = 10919^2 + 3770^2 .

It is a cyclic number.

It is not a de Polignac number, because 133437461 - 2²² = 129243157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133437431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66718730 + 66718731.

It is an arithmetic number, because the mean of its divisors is an integer number (66718731).

Almost surely, 2^133437461 is an apocalyptic number.

It is an amenable number.

133437461 is a deficient number, since it is larger than the sum of its proper divisors (1).

133437461 is an equidigital number, since it uses as much as digits as its factorization.

133437461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 133437461 is about 11551.5133640575. The cubic root of 133437461 is about 511.0059103461.

The spelling of 133437461 in words is "one hundred thirty-three million, four hundred thirty-seven thousand, four hundred sixty-one".