57212783 has 2 divisors, whose sum is σ = 57212784. Its totient is φ = 57212782.

The previous prime is 57212777. The next prime is 57212789. The reversal of 57212783 is 38721275.

It is a balanced prime because it is at equal distance from previous prime (57212777) and next prime (57212789).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57212783 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57212789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28606391 + 28606392.

It is an arithmetic number, because the mean of its divisors is an integer number (28606392).

Almost surely, 2^57212783 is an apocalyptic number.

57212783 is a deficient number, since it is larger than the sum of its proper divisors (1).

57212783 is an equidigital number, since it uses as much as digits as its factorization.

57212783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 35.

The square root of 57212783 is about 7563.9132067998. The cubic root of 57212783 is about 385.3284047859.

The spelling of 57212783 in words is "fifty-seven million, two hundred twelve thousand, seven hundred eighty-three".