57765069 has 10 divisors (see below), whose sum is σ = 86291150. Its totient is φ = 38509992.

The previous prime is 57765067. The next prime is 57765077. The reversal of 57765069 is 96056775.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57562569 + 202500 = 7587^2 + 450^2 .

It is not a de Polignac number, because 57765069 - 2¹ = 57765067 is a prime.

It is a super-2 number, since 2×57765069² = 6673606393149522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57765067) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 356494 + ... + 356655.

It is an arithmetic number, because the mean of its divisors is an integer number (8629115).

Almost surely, 2^57765069 is an apocalyptic number.

It is an amenable number.

57765069 is a deficient number, since it is larger than the sum of its proper divisors (28526081).

57765069 is an equidigital number, since it uses as much as digits as its factorization.

57765069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713161 (or 713152 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 45.

The square root of 57765069 is about 7600.3334795258. Note that the first 3 decimals coincide. The cubic root of 57765069 is about 386.5643195067.

The spelling of 57765069 in words is "fifty-seven million, seven hundred sixty-five thousand, sixty-nine".