57001949 has 2 divisors, whose sum is σ = 57001950. Its totient is φ = 57001948.

The previous prime is 57001939. The next prime is 57002039. The reversal of 57001949 is 94910075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52562500 + 4439449 = 7250^2 + 2107^2 .

It is a cyclic number.

It is not a de Polignac number, because 57001949 - 2⁴ = 57001933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57001909) 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, 28500974 + 28500975.

It is an arithmetic number, because the mean of its divisors is an integer number (28500975).

Almost surely, 2^57001949 is an apocalyptic number.

It is an amenable number.

57001949 is a deficient number, since it is larger than the sum of its proper divisors (1).

57001949 is an equidigital number, since it uses as much as digits as its factorization.

57001949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 57001949 is about 7549.9635098456. The cubic root of 57001949 is about 384.8544994687.

The spelling of 57001949 in words is "fifty-seven million, one thousand, nine hundred forty-nine".