57023211 has 12 divisors (see below), whose sum is σ = 88444392. Its totient is φ = 32584608.

The previous prime is 57023209. The next prime is 57023261. The reversal of 57023211 is 11232075.

It is not a de Polignac number, because 57023211 - 2¹ = 57023209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (57023261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193810 + ... + 194103.

It is an arithmetic number, because the mean of its divisors is an integer number (7370366).

Almost surely, 2^57023211 is an apocalyptic number.

57023211 is a deficient number, since it is larger than the sum of its proper divisors (31421181).

57023211 is a wasteful number, since it uses less digits than its factorization.

57023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387930 (or 387923 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 57023211 is about 7551.3714648400. The cubic root of 57023211 is about 384.9023443777.

Adding to 57023211 its reverse (11232075), we get a palindrome (68255286).

The spelling of 57023211 in words is "fifty-seven million, twenty-three thousand, two hundred eleven".