57440343 has 4 divisors (see below), whose sum is σ = 76587128. Its totient is φ = 38293560.

The previous prime is 57440323. The next prime is 57440351. The reversal of 57440343 is 34304475.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57440343 - 2⁵ = 57440311 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 57440343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57440323) 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, 9573388 + ... + 9573393.

It is an arithmetic number, because the mean of its divisors is an integer number (19146782).

Almost surely, 2^57440343 is an apocalyptic number.

57440343 is a deficient number, since it is larger than the sum of its proper divisors (19146785).

57440343 is a wasteful number, since it uses less digits than its factorization.

57440343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19146784.

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 57440343 is about 7578.9407571243. The cubic root of 57440343 is about 385.8386015708.

The spelling of 57440343 in words is "fifty-seven million, four hundred forty thousand, three hundred forty-three".