33750081 has 8 divisors (see below), whose sum is σ = 50000160. Its totient is φ = 22500036.

The previous prime is 33750077. The next prime is 33750091. The reversal of 33750081 is 18005733.

It is not a de Polignac number, because 33750081 - 2² = 33750077 is a prime.

It is a super-2 number, since 2×33750081² = 2278135935013122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1250003 = 33750081 / (3 + 3 + 7 + 5 + 0 + 0 + 8 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33750071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624975 + ... + 625028.

It is an arithmetic number, because the mean of its divisors is an integer number (6250020).

Almost surely, 2^33750081 is an apocalyptic number.

It is an amenable number.

33750081 is a deficient number, since it is larger than the sum of its proper divisors (16250079).

33750081 is a wasteful number, since it uses less digits than its factorization.

33750081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250012 (or 1250006 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 33750081 is about 5809.4819906770. The cubic root of 33750081 is about 323.1654620367.

The spelling of 33750081 in words is "thirty-three million, seven hundred fifty thousand, eighty-one".