57075649 has 4 divisors (see below), whose sum is σ = 58467780. Its totient is φ = 55683520.

The previous prime is 57075617. The next prime is 57075661. The reversal of 57075649 is 94657075.

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 16524225 + 40551424 = 4065^2 + 6368^2 .

It is a cyclic number.

It is not a de Polignac number, because 57075649 - 2⁵ = 57075617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57075149) 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, 696004 + ... + 696085.

It is an arithmetic number, because the mean of its divisors is an integer number (14616945).

Almost surely, 2^57075649 is an apocalyptic number.

It is an amenable number.

57075649 is a deficient number, since it is larger than the sum of its proper divisors (1392131).

57075649 is a wasteful number, since it uses less digits than its factorization.

57075649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392130.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 57075649 is about 7554.8427515071. The cubic root of 57075649 is about 385.0202924032.

The spelling of 57075649 in words is "fifty-seven million, seventy-five thousand, six hundred forty-nine".