133057771 has 24 divisors (see below), whose sum is σ = 172942560. Its totient is φ = 100087680.

The previous prime is 133057747. The next prime is 133057777. The reversal of 133057771 is 177750331.

It is a happy number.

It is not a de Polignac number, because 133057771 - 2⁵ = 133057739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133057777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21855 + ... + 27271.

It is an arithmetic number, because the mean of its divisors is an integer number (7205940).

Almost surely, 2^133057771 is an apocalyptic number.

133057771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133057771 is a deficient number, since it is larger than the sum of its proper divisors (39884789).

133057771 is a wasteful number, since it uses less digits than its factorization.

133057771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475 (or 5464 counting only the distinct ones).

The product of its (nonzero) digits is 15435, while the sum is 34.

The square root of 133057771 is about 11535.0670132427. The cubic root of 133057771 is about 510.5207688357.

The spelling of 133057771 in words is "one hundred thirty-three million, fifty-seven thousand, seven hundred seventy-one".