133551941 has 2 divisors, whose sum is σ = 133551942. Its totient is φ = 133551940.

The previous prime is 133551919. The next prime is 133551953. The reversal of 133551941 is 149155331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90649441 + 42902500 = 9521^2 + 6550^2 .

It is a cyclic number.

It is not a de Polignac number, because 133551941 - 2⁶ = 133551877 is a prime.

It is a super-2 number, since 2×133551941² = 35672241889734962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133551898 and 133551907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133551911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66775970 + 66775971.

It is an arithmetic number, because the mean of its divisors is an integer number (66775971).

Almost surely, 2^133551941 is an apocalyptic number.

It is an amenable number.

133551941 is a deficient number, since it is larger than the sum of its proper divisors (1).

133551941 is an equidigital number, since it uses as much as digits as its factorization.

133551941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 32.

The square root of 133551941 is about 11556.4674966012. The cubic root of 133551941 is about 511.1520043403.

The spelling of 133551941 in words is "one hundred thirty-three million, five hundred fifty-one thousand, nine hundred forty-one".