57485161 has 4 divisors (see below), whose sum is σ = 59038852. Its totient is φ = 55931472.

The previous prime is 57485147. The next prime is 57485173. The reversal of 57485161 is 16158475.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23040000 + 34445161 = 4800^2 + 5869^2 .

It is a cyclic number.

It is not a de Polignac number, because 57485161 - 2⁷ = 57485033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1553653 = 57485161 / (5 + 7 + 4 + 8 + 5 + 1 + 6 + 1).

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 57485161.

It is not an unprimeable number, because it can be changed into a prime (57485111) 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, 776790 + ... + 776863.

It is an arithmetic number, because the mean of its divisors is an integer number (14759713).

Almost surely, 2^57485161 is an apocalyptic number.

It is an amenable number.

57485161 is a deficient number, since it is larger than the sum of its proper divisors (1553691).

57485161 is a wasteful number, since it uses less digits than its factorization.

57485161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553690.

The product of its digits is 33600, while the sum is 37.

The square root of 57485161 is about 7581.8969262316. The cubic root of 57485161 is about 385.9389260581.

The spelling of 57485161 in words is "fifty-seven million, four hundred eighty-five thousand, one hundred sixty-one".