57520649 has 2 divisors, whose sum is σ = 57520650. Its totient is φ = 57520648.

The previous prime is 57520583. The next prime is 57520669. The reversal of 57520649 is 94602575.

It is a happy number.

57520649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51552400 + 5968249 = 7180^2 + 2443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57520649 is a prime.

It is a super-2 number, since 2×57520649² = 6617250122762402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57520669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28760324 + 28760325.

It is an arithmetic number, because the mean of its divisors is an integer number (28760325).

Almost surely, 2^57520649 is an apocalyptic number.

It is an amenable number.

57520649 is a deficient number, since it is larger than the sum of its proper divisors (1).

57520649 is an equidigital number, since it uses as much as digits as its factorization.

57520649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 57520649 is about 7584.2368765750. The cubic root of 57520649 is about 386.0183284808.

The spelling of 57520649 in words is "fifty-seven million, five hundred twenty thousand, six hundred forty-nine".