57004397 has 2 divisors, whose sum is σ = 57004398. Its totient is φ = 57004396.

The previous prime is 57004333. The next prime is 57004403. The reversal of 57004397 is 79340075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44970436 + 12033961 = 6706^2 + 3469^2 .

It is a cyclic number.

It is not a de Polignac number, because 57004397 - 2⁶ = 57004333 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 (57001397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28502198 + 28502199.

It is an arithmetic number, because the mean of its divisors is an integer number (28502199).

Almost surely, 2^57004397 is an apocalyptic number.

It is an amenable number.

57004397 is a deficient number, since it is larger than the sum of its proper divisors (1).

57004397 is an equidigital number, since it uses as much as digits as its factorization.

57004397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 57004397 is about 7550.1256280939. The cubic root of 57004397 is about 384.8600086975.

The spelling of 57004397 in words is "fifty-seven million, four thousand, three hundred ninety-seven".