33077971 has 4 divisors (see below), whose sum is σ = 35023752. Its totient is φ = 31132192.

The previous prime is 33077959. The next prime is 33077981. The reversal of 33077971 is 17977033.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33077971 - 2⁷ = 33077843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33077971.

It is not an unprimeable number, because it can be changed into a prime (33077981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972865 + ... + 972898.

It is an arithmetic number, because the mean of its divisors is an integer number (8755938).

Almost surely, 2^33077971 is an apocalyptic number.

33077971 is a deficient number, since it is larger than the sum of its proper divisors (1945781).

33077971 is a wasteful number, since it uses less digits than its factorization.

33077971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945780.

The product of its (nonzero) digits is 27783, while the sum is 37.

The square root of 33077971 is about 5751.3451470069. The cubic root of 33077971 is about 321.0058551676.

The spelling of 33077971 in words is "thirty-three million, seventy-seven thousand, nine hundred seventy-one".