57430397 has 2 divisors, whose sum is σ = 57430398. Its totient is φ = 57430396.

The previous prime is 57430363. The next prime is 57430421. The reversal of 57430397 is 79303475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43375396 + 14055001 = 6586^2 + 3749^2 .

It is a cyclic number.

It is not a de Polignac number, because 57430397 - 2¹⁰ = 57429373 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57430397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57430357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28715198 + 28715199.

It is an arithmetic number, because the mean of its divisors is an integer number (28715199).

Almost surely, 2^57430397 is an apocalyptic number.

It is an amenable number.

57430397 is a deficient number, since it is larger than the sum of its proper divisors (1).

57430397 is an equidigital number, since it uses as much as digits as its factorization.

57430397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 57430397 is about 7578.2845684231. The cubic root of 57430397 is about 385.8163305092.

The spelling of 57430397 in words is "fifty-seven million, four hundred thirty thousand, three hundred ninety-seven".