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33157 = 71467
BaseRepresentation
bin1000000110000101
31200111001
420012011
52030112
6413301
7165445
oct100605
950431
1033157
1122a03
1217231
1312127
14c125
159c57
hex8185

33157 has 4 divisors (see below), whose sum is σ = 33696. Its totient is φ = 32620.

The previous prime is 33151. The next prime is 33161. The reversal of 33157 is 75133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33157 - 23 = 33149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163 + ... + 304.

It is an arithmetic number, because the mean of its divisors is an integer number (8424).

233157 is an apocalyptic number.

It is an amenable number.

33157 is a deficient number, since it is larger than the sum of its proper divisors (539).

33157 is an equidigital number, since it uses as much as digits as its factorization.

33157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538.

The product of its digits is 315, while the sum is 19.

The square root of 33157 is about 182.0906367719. The cubic root of 33157 is about 32.1261298033.

It can be divided in two parts, 33 and 157, that added together give a triangular number (190 = T19).

The spelling of 33157 in words is "thirty-three thousand, one hundred fifty-seven".

Divisors: 1 71 467 33157