1351555 has 4 divisors (see below), whose sum is σ = 1621872. Its totient is φ = 1081240.

The previous prime is 1351547. The next prime is 1351589. The reversal of 1351555 is 5551531.

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

It is not a de Polignac number, because 1351555 - 2³ = 1351547 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 135151 + ... + 135160.

It is an arithmetic number, because the mean of its divisors is an integer number (405468).

2^1351555 is an apocalyptic number.

1351555 is a deficient number, since it is larger than the sum of its proper divisors (270317).

1351555 is an equidigital number, since it uses as much as digits as its factorization.

1351555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270316.

The product of its digits is 1875, while the sum is 25.

The square root of 1351555 is about 1162.5639767342. The cubic root of 1351555 is about 110.5633632619.

The spelling of 1351555 in words is "one million, three hundred fifty-one thousand, five hundred fifty-five".