1455643 has 12 divisors (see below), whose sum is σ = 1724592. Its totient is φ = 1224720.

The previous prime is 1455613. The next prime is 1455653. The reversal of 1455643 is 3465541.

It is not a de Polignac number, because 1455643 - 2¹⁷ = 1324571 is a prime.

It is the 1207-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (1455613) by changing a digit.

It is a nontrivial repunit in base 1206.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2746 + ... + 3232.

It is an arithmetic number, because the mean of its divisors is an integer number (143716).

2^1455643 is an apocalyptic number.

1455643 is a deficient number, since it is larger than the sum of its proper divisors (268949).

1455643 is an equidigital number, since it uses as much as digits as its factorization.

1455643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 555 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 1455643 is about 1206.5003108164. The cubic root of 1455643 is about 113.3317579558.

The spelling of 1455643 in words is "one million, four hundred fifty-five thousand, six hundred forty-three".