57091043 has 4 divisors (see below), whose sum is σ = 57253128. Its totient is φ = 56928960.

The previous prime is 57091031. The next prime is 57091061. The reversal of 57091043 is 34019075.

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 57091043 - 2¹² = 57086947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57090997 and 57091015.

It is not an unprimeable number, because it can be changed into a prime (57091063) 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, 80513 + ... + 81218.

It is an arithmetic number, because the mean of its divisors is an integer number (14313282).

Almost surely, 2^57091043 is an apocalyptic number.

57091043 is a deficient number, since it is larger than the sum of its proper divisors (162085).

57091043 is a wasteful number, since it uses less digits than its factorization.

57091043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162084.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 57091043 is about 7555.8614995247. The cubic root of 57091043 is about 385.0549041842.

The spelling of 57091043 in words is "fifty-seven million, ninety-one thousand, forty-three".