57440755 has 4 divisors (see below), whose sum is σ = 68928912. Its totient is φ = 45952600.

The previous prime is 57440723. The next prime is 57440759. The reversal of 57440755 is 55704475.

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

It is not a de Polignac number, because 57440755 - 2⁵ = 57440723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57440759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5744071 + ... + 5744080.

It is an arithmetic number, because the mean of its divisors is an integer number (17232228).

Almost surely, 2^57440755 is an apocalyptic number.

57440755 is a deficient number, since it is larger than the sum of its proper divisors (11488157).

57440755 is a wasteful number, since it uses less digits than its factorization.

57440755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11488156.

The product of its (nonzero) digits is 98000, while the sum is 37.

The square root of 57440755 is about 7578.9679376548. The cubic root of 57440755 is about 385.8395240649.

The spelling of 57440755 in words is "fifty-seven million, four hundred forty thousand, seven hundred fifty-five".