57020990 has 16 divisors (see below), whose sum is σ = 110533248. Its totient is φ = 21053856.

The previous prime is 57020983. The next prime is 57020993. The reversal of 57020990 is 9902075.

57020990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57020993) 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, 219182 + ... + 219441.

It is an arithmetic number, because the mean of its divisors is an integer number (6908328).

Almost surely, 2^57020990 is an apocalyptic number.

57020990 is a deficient number, since it is larger than the sum of its proper divisors (53512258).

57020990 is a wasteful number, since it uses less digits than its factorization.

57020990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438643.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 57020990 is about 7551.2244040288. The cubic root of 57020990 is about 384.8973471190.

The spelling of 57020990 in words is "fifty-seven million, twenty thousand, nine hundred ninety".