57245649 has 16 divisors (see below), whose sum is σ = 77500800. Its totient is φ = 37581696.

The previous prime is 57245641. The next prime is 57245653. The reversal of 57245649 is 94654275.

It is not a de Polignac number, because 57245649 - 2³ = 57245641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57245649.

It is not an unprimeable number, because it can be changed into a prime (57245641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70357 + ... + 71165.

It is an arithmetic number, because the mean of its divisors is an integer number (4843800).

Almost surely, 2^57245649 is an apocalyptic number.

It is an amenable number.

57245649 is a deficient number, since it is larger than the sum of its proper divisors (20255151).

57245649 is a wasteful number, since it uses less digits than its factorization.

57245649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144.

The product of its digits is 302400, while the sum is 42.

The square root of 57245649 is about 7566.0854475746. The cubic root of 57245649 is about 385.4021748915.

The spelling of 57245649 in words is "fifty-seven million, two hundred forty-five thousand, six hundred forty-nine".