57541809 has 8 divisors (see below), whose sum is σ = 82624192. Its totient is φ = 35410320.

The previous prime is 57541789. The next prime is 57541843. The reversal of 57541809 is 90814575.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57541809 - 2⁵ = 57541777 is a prime.

It is a super-2 number, since 2×57541809² = 6622119565984962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1475431 = 57541809 / (5 + 7 + 5 + 4 + 1 + 8 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57541609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737677 + ... + 737754.

It is an arithmetic number, because the mean of its divisors is an integer number (10328024).

Almost surely, 2^57541809 is an apocalyptic number.

It is an amenable number.

57541809 is a deficient number, since it is larger than the sum of its proper divisors (25082383).

57541809 is a wasteful number, since it uses less digits than its factorization.

57541809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475447.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 57541809 is about 7585.6317469279. The cubic root of 57541809 is about 386.0656572609.

The spelling of 57541809 in words is "fifty-seven million, five hundred forty-one thousand, eight hundred nine".