133057971 has 20 divisors (see below), whose sum is σ = 200050752. Its totient is φ = 88131888.

The previous prime is 133057961. The next prime is 133058011. The reversal of 133057971 is 179750331.

133057971 is a `hidden beast` number, since 13 + 3 + 0 + 579 + 71 = 666.

It is not a de Polignac number, because 133057971 - 2⁷ = 133057843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133057961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7486 + ... + 17948.

Almost surely, 2^133057971 is an apocalyptic number.

133057971 is a deficient number, since it is larger than the sum of its proper divisors (66992781).

133057971 is a wasteful number, since it uses less digits than its factorization.

133057971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10632 (or 10623 counting only the distinct ones).

The product of its (nonzero) digits is 19845, while the sum is 36.

The square root of 133057971 is about 11535.0756824565. The cubic root of 133057971 is about 510.5210246246.

The spelling of 133057971 in words is "one hundred thirty-three million, fifty-seven thousand, nine hundred seventy-one".