57001397 has 2 divisors, whose sum is σ = 57001398. Its totient is φ = 57001396.

The previous prime is 57001379. The next prime is 57001403. The reversal of 57001397 is 79310075.

Together with previous prime (57001379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35832196 + 21169201 = 5986^2 + 4601^2 .

It is a cyclic number.

It is not a de Polignac number, because 57001397 - 2¹² = 56997301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57001367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28500698 + 28500699.

It is an arithmetic number, because the mean of its divisors is an integer number (28500699).

Almost surely, 2^57001397 is an apocalyptic number.

It is an amenable number.

57001397 is a deficient number, since it is larger than the sum of its proper divisors (1).

57001397 is an equidigital number, since it uses as much as digits as its factorization.

57001397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6615, while the sum is 32.

The square root of 57001397 is about 7549.9269532890. The cubic root of 57001397 is about 384.8532571699.

The spelling of 57001397 in words is "fifty-seven million, one thousand, three hundred ninety-seven".