57055211 has 2 divisors, whose sum is σ = 57055212. Its totient is φ = 57055210.

The previous prime is 57055177. The next prime is 57055223. The reversal of 57055211 is 11255075.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57055211 is a prime.

It is not a weakly prime, because it can be changed into another prime (57055241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28527605 + 28527606.

It is an arithmetic number, because the mean of its divisors is an integer number (28527606).

Almost surely, 2^57055211 is an apocalyptic number.

57055211 is a deficient number, since it is larger than the sum of its proper divisors (1).

57055211 is an equidigital number, since it uses as much as digits as its factorization.

57055211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 57055211 is about 7553.4899880784. The cubic root of 57055211 is about 384.9743301039.

The spelling of 57055211 in words is "fifty-seven million, fifty-five thousand, two hundred eleven".