1405546 has 4 divisors (see below), whose sum is σ = 2108322. Its totient is φ = 702772.

The previous prime is 1405531. The next prime is 1405561. The reversal of 1405546 is 6455041.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1405531) and next prime (1405561).

It can be written as a sum of positive squares in only one way, i.e., 741321 + 664225 = 861^2 + 815^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1405546.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 351385 + ... + 351388.

2^1405546 is an apocalyptic number.

1405546 is a deficient number, since it is larger than the sum of its proper divisors (702776).

1405546 is an equidigital number, since it uses as much as digits as its factorization.

1405546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702775.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1405546 is about 1185.5572529406. The cubic root of 1405546 is about 112.0164197865.

The spelling of 1405546 in words is "one million, four hundred five thousand, five hundred forty-six".