57771394 has 8 divisors (see below), whose sum is σ = 87515388. Its totient is φ = 28599600.

The previous prime is 57771391. The next prime is 57771401. The reversal of 57771394 is 49317775.

It can be written as a sum of positive squares in 2 ways, for example, as 37638225 + 20133169 = 6135^2 + 4487^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 57771394.

It is not an unprimeable number, because it can be changed into a prime (57771391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142797 + ... + 143200.

Almost surely, 2^57771394 is an apocalyptic number.

57771394 is a deficient number, since it is larger than the sum of its proper divisors (29743994).

57771394 is a wasteful number, since it uses less digits than its factorization.

57771394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286100.

The product of its digits is 185220, while the sum is 43.

The square root of 57771394 is about 7600.7495682992. The cubic root of 57771394 is about 386.5784279759.

The spelling of 57771394 in words is "fifty-seven million, seven hundred seventy-one thousand, three hundred ninety-four".