57765397 has 8 divisors (see below), whose sum is σ = 61560576. Its totient is φ = 54077232.

The previous prime is 57765373. The next prime is 57765403. The reversal of 57765397 is 79356775.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-57765397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57765397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57765317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25638 + ... + 27799.

It is an arithmetic number, because the mean of its divisors is an integer number (7695072).

Almost surely, 2^57765397 is an apocalyptic number.

It is an amenable number.

57765397 is a deficient number, since it is larger than the sum of its proper divisors (3795179).

57765397 is a wasteful number, since it uses less digits than its factorization.

57765397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53507.

The product of its digits is 1389150, while the sum is 49.

The square root of 57765397 is about 7600.3550574957. The cubic root of 57765397 is about 386.5650511649.

The spelling of 57765397 in words is "fifty-seven million, seven hundred sixty-five thousand, three hundred ninety-seven".