57642245 has 4 divisors (see below), whose sum is σ = 69170700. Its totient is φ = 46113792.

The previous prime is 57642203. The next prime is 57642251. The reversal of 57642245 is 54224675.

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 9728161 + 47914084 = 3119^2 + 6922^2 .

It is a cyclic number.

It is not a de Polignac number, because 57642245 - 2¹² = 57638149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5764220 + ... + 5764229.

It is an arithmetic number, because the mean of its divisors is an integer number (17292675).

Almost surely, 2^57642245 is an apocalyptic number.

It is an amenable number.

57642245 is a deficient number, since it is larger than the sum of its proper divisors (11528455).

57642245 is a wasteful number, since it uses less digits than its factorization.

57642245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11528454.

The product of its digits is 67200, while the sum is 35.

The square root of 57642245 is about 7592.2490080344. The cubic root of 57642245 is about 386.2901453509.

The spelling of 57642245 in words is "fifty-seven million, six hundred forty-two thousand, two hundred forty-five".