57091016 has 8 divisors (see below), whose sum is σ = 107045670. Its totient is φ = 28545504.

The previous prime is 57090997. The next prime is 57091019. The reversal of 57091016 is 61019075.

It is a happy number.

57091016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39062500 + 18028516 = 6250^2 + 4246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 57091016.

It is not an unprimeable number, because it can be changed into a prime (57091019) 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 as a sum of consecutive naturals, namely, 3568181 + ... + 3568196.

Almost surely, 2^57091016 is an apocalyptic number.

It is an amenable number.

57091016 is a deficient number, since it is larger than the sum of its proper divisors (49954654).

57091016 is a wasteful number, since it uses less digits than its factorization.

57091016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136383 (or 7136379 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 57091016 is about 7555.8597128322. The cubic root of 57091016 is about 385.0548434830.

The spelling of 57091016 in words is "fifty-seven million, ninety-one thousand, sixteen".