57020258 has 8 divisors (see below), whose sum is σ = 87616620. Its totient is φ = 27814720.

The previous prime is 57020251. The next prime is 57020267. The reversal of 57020258 is 85202075.

57020258 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 2 ways, for example, as 48121969 + 8898289 = 6937^2 + 2983^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57020258.

It is not an unprimeable number, because it can be changed into a prime (57020251) 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, 347603 + ... + 347766.

Almost surely, 2^57020258 is an apocalyptic number.

57020258 is a deficient number, since it is larger than the sum of its proper divisors (30596362).

57020258 is a wasteful number, since it uses less digits than its factorization.

57020258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695412.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 57020258 is about 7551.1759349124. The cubic root of 57020258 is about 384.8957000877.

The spelling of 57020258 in words is "fifty-seven million, twenty thousand, two hundred fifty-eight".