33661057 has 4 divisors (see below), whose sum is σ = 33681456. Its totient is φ = 33640660.

The previous prime is 33661051. The next prime is 33661063. The reversal of 33661057 is 75016633.

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 an interprime number because it is at equal distance from previous prime (33661051) and next prime (33661063).

It is a cyclic number.

It is not a de Polignac number, because 33661057 - 2²³ = 25272449 is a prime.

It is a super-2 number, since 2×33661057² = 2266133516714498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33661051) 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, 7483 + ... + 11104.

It is an arithmetic number, because the mean of its divisors is an integer number (8420364).

Almost surely, 2^33661057 is an apocalyptic number.

It is an amenable number.

33661057 is a deficient number, since it is larger than the sum of its proper divisors (20399).

33661057 is a wasteful number, since it uses less digits than its factorization.

33661057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20398.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 33661057 is about 5801.8149746437. The cubic root of 33661057 is about 322.8810694875.

The spelling of 33661057 in words is "thirty-three million, six hundred sixty-one thousand, fifty-seven".