1397057 has 2 divisors, whose sum is σ = 1397058. Its totient is φ = 1397056.

The previous prime is 1397041. The next prime is 1397059. The reversal of 1397057 is 7507931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1073296 + 323761 = 1036^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397057 - 2⁴ = 1397041 is a prime.

It is a super-2 number, since 2×1397057² = 3903536522498, which contains 22 as substring.

Together with 1397059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1397059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698528 + 698529.

It is an arithmetic number, because the mean of its divisors is an integer number (698529).

2^1397057 is an apocalyptic number.

It is an amenable number.

1397057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397057 is an equidigital number, since it uses as much as digits as its factorization.

1397057 is an evil number, because the sum of its binary digits is even.

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

The square root of 1397057 is about 1181.9716578666. The cubic root of 1397057 is about 111.7904510839.

The spelling of 1397057 in words is "one million, three hundred ninety-seven thousand, fifty-seven".