33157983 has 16 divisors (see below), whose sum is σ = 47531520. Its totient is φ = 20494656.

The previous prime is 33157967. The next prime is 33158009. The reversal of 33157983 is 38975133.

It is not a de Polignac number, because 33157983 - 2⁴ = 33157967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33157963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3510 + ... + 8867.

It is an arithmetic number, because the mean of its divisors is an integer number (2970720).

Almost surely, 2^33157983 is an apocalyptic number.

33157983 is a deficient number, since it is larger than the sum of its proper divisors (14373537).

33157983 is a wasteful number, since it uses less digits than its factorization.

33157983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12446.

The product of its digits is 68040, while the sum is 39.

The square root of 33157983 is about 5758.2968836280. The cubic root of 33157983 is about 321.2644727945.

The spelling of 33157983 in words is "thirty-three million, one hundred fifty-seven thousand, nine hundred eighty-three".