57447245 has 8 divisors (see below), whose sum is σ = 69336216. Its totient is φ = 45691456.

The previous prime is 57447227. The next prime is 57447259. The reversal of 57447245 is 54274475.

It can be written as a sum of positive squares in 4 ways, for example, as 11383876 + 46063369 = 3374^2 + 6787^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57447245 - 2¹⁴ = 57430861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57447199 and 57447208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32342 + ... + 34071.

It is an arithmetic number, because the mean of its divisors is an integer number (8667027).

Almost surely, 2^57447245 is an apocalyptic number.

It is an amenable number.

57447245 is a deficient number, since it is larger than the sum of its proper divisors (11888971).

57447245 is a wasteful number, since it uses less digits than its factorization.

57447245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66591.

The product of its digits is 156800, while the sum is 38.

The square root of 57447245 is about 7579.3960841217. The cubic root of 57447245 is about 385.8540550032.

The spelling of 57447245 in words is "fifty-seven million, four hundred forty-seven thousand, two hundred forty-five".