1355427 has 16 divisors (see below), whose sum is σ = 2126880. Its totient is φ = 850176.

The previous prime is 1355423. The next prime is 1355429. The reversal of 1355427 is 7245531.

It is a happy number.

It is not a de Polignac number, because 1355427 - 2² = 1355423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 1 + 3⁸ + 5 + 5 + 4⁵ + 2¹⁹ + 7⁷ .

1355427 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1355427.

It is not an unprimeable number, because it can be changed into a prime (1355423) 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 15 ways as a sum of consecutive naturals, for example, 1018 + ... + 1935.

It is an arithmetic number, because the mean of its divisors is an integer number (132930).

2^1355427 is an apocalyptic number.

1355427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1355427 is a deficient number, since it is larger than the sum of its proper divisors (771453).

1355427 is a wasteful number, since it uses less digits than its factorization.

1355427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2973 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 1355427 is about 1164.2280704398. The cubic root of 1355427 is about 110.6688450161.

The spelling of 1355427 in words is "one million, three hundred fifty-five thousand, four hundred twenty-seven".