1345457 has 2 divisors, whose sum is σ = 1345458. Its totient is φ = 1345456.

The previous prime is 1345453. The next prime is 1345471. The reversal of 1345457 is 7545431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 781456 + 564001 = 884^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345457 - 2² = 1345453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1345451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672728 + 672729.

It is an arithmetic number, because the mean of its divisors is an integer number (672729).

2^1345457 is an apocalyptic number.

It is an amenable number.

1345457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345457 is an equidigital number, since it uses as much as digits as its factorization.

1345457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 29.

The square root of 1345457 is about 1159.9383604313. The cubic root of 1345457 is about 110.3968311507.

The spelling of 1345457 in words is "one million, three hundred forty-five thousand, four hundred fifty-seven".