57455890 has 16 divisors (see below), whose sum is σ = 104117400. Its totient is φ = 22827520.

The previous prime is 57455887. The next prime is 57455899. The reversal of 57455890 is 9855475.

57455890 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 4 ways, for example, as 26553409 + 30902481 = 5153^2 + 5559^2 .

It is not an unprimeable number, because it can be changed into a prime (57455899) 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 7 ways as a sum of consecutive naturals, for example, 17791 + ... + 20770.

Almost surely, 2^57455890 is an apocalyptic number.

57455890 is a deficient number, since it is larger than the sum of its proper divisors (46661510).

57455890 is a wasteful number, since it uses less digits than its factorization.

57455890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38717.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 57455890 is about 7579.9663587644. The cubic root of 57455890 is about 385.8734092298.

The spelling of 57455890 in words is "fifty-seven million, four hundred fifty-five thousand, eight hundred ninety".