1456891 has 2 divisors, whose sum is σ = 1456892. Its totient is φ = 1456890.

The previous prime is 1456877. The next prime is 1456919. The reversal of 1456891 is 1986541.

It is a weak prime.

It is an emirp because it is prime and its reverse (1986541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1456891 - 2¹⁵ = 1424123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1456391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728445 + 728446.

It is an arithmetic number, because the mean of its divisors is an integer number (728446).

2^1456891 is an apocalyptic number.

1456891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1456891 is an equidigital number, since it uses as much as digits as its factorization.

1456891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 34.

The square root of 1456891 is about 1207.0173983833. The cubic root of 1456891 is about 113.3641371478.

The spelling of 1456891 in words is "one million, four hundred fifty-six thousand, eight hundred ninety-one".