1405545 has 8 divisors (see below), whose sum is σ = 2248896. Its totient is φ = 749616.

The previous prime is 1405531. The next prime is 1405561. The reversal of 1405545 is 5455041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1405545 - 2⁴ = 1405529 is a prime.

It is an Ulam number.

It is a Curzon number.

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 in 7 ways as a sum of consecutive naturals, for example, 46837 + ... + 46866.

It is an arithmetic number, because the mean of its divisors is an integer number (281112).

2^1405545 is an apocalyptic number.

1405545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1405545 is a deficient number, since it is larger than the sum of its proper divisors (843351).

1405545 is an equidigital number, since it uses as much as digits as its factorization.

1405545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93711.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 1405545 is about 1185.5568311979. The cubic root of 1405545 is about 112.0163932212.

The spelling of 1405545 in words is "one million, four hundred five thousand, five hundred forty-five".