57033139 has 4 divisors (see below), whose sum is σ = 57087856. Its totient is φ = 56978424.

The previous prime is 57033131. The next prime is 57033157. The reversal of 57033139 is 93133075.

57033139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57033139 - 2³ = 57033131 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 57033139.

It is not an unprimeable number, because it can be changed into a prime (57033131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25764 + ... + 27889.

It is an arithmetic number, because the mean of its divisors is an integer number (14271964).

Almost surely, 2^57033139 is an apocalyptic number.

57033139 is a deficient number, since it is larger than the sum of its proper divisors (54717).

57033139 is a wasteful number, since it uses less digits than its factorization.

57033139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54716.

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 57033139 is about 7552.0288002629. The cubic root of 57033139 is about 384.9246808301.

The spelling of 57033139 in words is "fifty-seven million, thirty-three thousand, one hundred thirty-nine".