133651457 has 2 divisors, whose sum is σ = 133651458. Its totient is φ = 133651456.

The previous prime is 133651423. The next prime is 133651481. The reversal of 133651457 is 754156331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130965136 + 2686321 = 11444^2 + 1639^2 .

It is an emirp because it is prime and its reverse (754156331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133651457 - 2⁸ = 133651201 is a prime.

It is equal to p_7573346 and since 133651457 and 7573346 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (133651417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66825728 + 66825729.

It is an arithmetic number, because the mean of its divisors is an integer number (66825729).

Almost surely, 2^133651457 is an apocalyptic number.

It is an amenable number.

133651457 is a deficient number, since it is larger than the sum of its proper divisors (1).

133651457 is an equidigital number, since it uses as much as digits as its factorization.

133651457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 133651457 is about 11560.7723357914. The cubic root of 133651457 is about 511.2789341651.

The spelling of 133651457 in words is "one hundred thirty-three million, six hundred fifty-one thousand, four hundred fifty-seven".