57473809 has 4 divisors (see below), whose sum is σ = 58696704. Its totient is φ = 56250916.

The previous prime is 57473807. The next prime is 57473827. The reversal of 57473809 is 90837475.

It is a happy number.

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 not a de Polignac number, because 57473809 - 2¹ = 57473807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57473807) 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, 611377 + ... + 611470.

It is an arithmetic number, because the mean of its divisors is an integer number (14674176).

Almost surely, 2^57473809 is an apocalyptic number.

It is an amenable number.

57473809 is a deficient number, since it is larger than the sum of its proper divisors (1222895).

57473809 is a wasteful number, since it uses less digits than its factorization.

57473809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222894.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 57473809 is about 7581.1482639505. The cubic root of 57473809 is about 385.9135196921.

The spelling of 57473809 in words is "fifty-seven million, four hundred seventy-three thousand, eight hundred nine".