33138057 has 4 divisors (see below), whose sum is σ = 44184080. Its totient is φ = 22092036.

The previous prime is 33138037. The next prime is 33138059. The reversal of 33138057 is 75083133.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75083133 = 3 ⋅25027711.

It is not a de Polignac number, because 33138057 - 2¹⁰ = 33137033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33138059) 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, 5523007 + ... + 5523012.

It is an arithmetic number, because the mean of its divisors is an integer number (11046020).

Almost surely, 2^33138057 is an apocalyptic number.

It is an amenable number.

33138057 is a deficient number, since it is larger than the sum of its proper divisors (11046023).

33138057 is a wasteful number, since it uses less digits than its factorization.

33138057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11046022.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 33138057 is about 5756.5664245277. The cubic root of 33138057 is about 321.2001062071.

The spelling of 33138057 in words is "thirty-three million, one hundred thirty-eight thousand, fifty-seven".