1355745 has 32 divisors (see below), whose sum is σ = 2350080. Its totient is φ = 665280.

The previous prime is 1355743. The next prime is 1355749. The reversal of 1355745 is 5475531.

It is not a de Polignac number, because 1355745 - 2¹ = 1355743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1355741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19060 + ... + 19130.

It is an arithmetic number, because the mean of its divisors is an integer number (73440).

2^1355745 is an apocalyptic number.

1355745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1355745 is a deficient number, since it is larger than the sum of its proper divisors (994335).

1355745 is a wasteful number, since it uses less digits than its factorization.

1355745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165.

The product of its digits is 10500, while the sum is 30.

The square root of 1355745 is about 1164.3646336092. The cubic root of 1355745 is about 110.6774991009.

It can be divided in two parts, 1 and 355745, that added together give a triangular number (355746 = T₈₄₃).

The spelling of 1355745 in words is "one million, three hundred fifty-five thousand, seven hundred forty-five".