33406057 has 4 divisors (see below), whose sum is σ = 34558020. Its totient is φ = 32254096.

The previous prime is 33406031. The next prime is 33406063. The reversal of 33406057 is 75060433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75060433 = 7 ⋅10722919.

It can be written as a sum of positive squares in 2 ways, for example, as 18071001 + 15335056 = 4251^2 + 3916^2 .

It is a cyclic number.

It is not a de Polignac number, because 33406057 - 2¹⁹ = 32881769 is a prime.

It is a super-2 number, since 2×33406057² = 2231929288574498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33406007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575938 + ... + 575995.

It is an arithmetic number, because the mean of its divisors is an integer number (8639505).

Almost surely, 2^33406057 is an apocalyptic number.

It is an amenable number.

33406057 is a deficient number, since it is larger than the sum of its proper divisors (1151963).

33406057 is a wasteful number, since it uses less digits than its factorization.

33406057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151962.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 33406057 is about 5779.7973147854. The cubic root of 33406057 is about 322.0636712947.

The spelling of 33406057 in words is "thirty-three million, four hundred six thousand, fifty-seven".