57781276 has 12 divisors (see below), whose sum is σ = 115562608. Its totient is φ = 24763392.

The previous prime is 57781271. The next prime is 57781277. The reversal of 57781276 is 67218775.

57781276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

57781276 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57781271) 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 in 3 ways as a sum of consecutive naturals, for example, 1031781 + ... + 1031836.

Almost surely, 2^57781276 is an apocalyptic number.

It is an amenable number.

57781276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57781276 is a wasteful number, since it uses less digits than its factorization.

57781276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063628 (or 2063626 counting only the distinct ones).

The product of its digits is 164640, while the sum is 43.

The square root of 57781276 is about 7601.3996079669. The cubic root of 57781276 is about 386.6004685855.

The spelling of 57781276 in words is "fifty-seven million, seven hundred eighty-one thousand, two hundred seventy-six".