1355405 has 8 divisors (see below), whose sum is σ = 1633632. Its totient is φ = 1079568.

The previous prime is 1355401. The next prime is 1355423. The reversal of 1355405 is 5045531.

1355405 is nontrivially palindromic in base 8.

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

It is a cyclic number.

It is not a de Polignac number, because 1355405 - 2² = 1355401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355401) by changing a digit.

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, 1094 + ... + 1976.

It is an arithmetic number, because the mean of its divisors is an integer number (204204).

2^1355405 is an apocalyptic number.

It is an amenable number.

1355405 is a deficient number, since it is larger than the sum of its proper divisors (278227).

1355405 is an equidigital number, since it uses as much as digits as its factorization.

1355405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1355405 is about 1164.2186220809. The cubic root of 1355405 is about 110.6682462557.

The spelling of 1355405 in words is "one million, three hundred fifty-five thousand, four hundred five".