57520069 has 2 divisors, whose sum is σ = 57520070. Its totient is φ = 57520068.

The previous prime is 57520037. The next prime is 57520091. The reversal of 57520069 is 96002575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53479969 + 4040100 = 7313^2 + 2010^2 .

It is a cyclic number.

It is not a de Polignac number, because 57520069 - 2⁵ = 57520037 is a prime.

It is a super-2 number, since 2×57520069² = 6617116675529522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57520009) 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 as a sum of consecutive naturals, namely, 28760034 + 28760035.

It is an arithmetic number, because the mean of its divisors is an integer number (28760035).

Almost surely, 2^57520069 is an apocalyptic number.

It is an amenable number.

57520069 is a deficient number, since it is larger than the sum of its proper divisors (1).

57520069 is an equidigital number, since it uses as much as digits as its factorization.

57520069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 57520069 is about 7584.1986392763. The cubic root of 57520069 is about 386.0170310257.

The spelling of 57520069 in words is "fifty-seven million, five hundred twenty thousand, sixty-nine".