1457147 has 2 divisors, whose sum is σ = 1457148. Its totient is φ = 1457146.

The previous prime is 1457143. The next prime is 1457149. The reversal of 1457147 is 7417541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1457147 - 2² = 1457143 is a prime.

Together with 1457149, 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 (1457143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728573 + 728574.

It is an arithmetic number, because the mean of its divisors is an integer number (728574).

2^1457147 is an apocalyptic number.

1457147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457147 is an equidigital number, since it uses as much as digits as its factorization.

1457147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 29.

The square root of 1457147 is about 1207.1234402496. The cubic root of 1457147 is about 113.3707767475.

The spelling of 1457147 in words is "one million, four hundred fifty-seven thousand, one hundred forty-seven".