57378809 has 4 divisors (see below), whose sum is σ = 57475200. Its totient is φ = 57282420.

The previous prime is 57378793. The next prime is 57378817. The reversal of 57378809 is 90887375.

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.

It is a cyclic number.

It is not a de Polignac number, because 57378809 - 2⁴ = 57378793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57378829) 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, 47297 + ... + 48494.

It is an arithmetic number, because the mean of its divisors is an integer number (14368800).

Almost surely, 2^57378809 is an apocalyptic number.

It is an amenable number.

57378809 is a deficient number, since it is larger than the sum of its proper divisors (96391).

57378809 is an equidigital number, since it uses as much as digits as its factorization.

57378809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96390.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 57378809 is about 7574.8801310648. The cubic root of 57378809 is about 385.7007734962.

The spelling of 57378809 in words is "fifty-seven million, three hundred seventy-eight thousand, eight hundred nine".