1355493 has 4 divisors (see below), whose sum is σ = 1807328. Its totient is φ = 903660.

The previous prime is 1355483. The next prime is 1355503. The reversal of 1355493 is 3945531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3945531 = 3 ⋅1315177.

It is an interprime number because it is at equal distance from previous prime (1355483) and next prime (1355503).

It is not a de Polignac number, because 1355493 - 2⁶ = 1355429 is a prime.

It is a super-2 number, since 2×1355493² = 3674722546098, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1355493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225913 + ... + 225918.

It is an arithmetic number, because the mean of its divisors is an integer number (451832).

2^1355493 is an apocalyptic number.

It is an amenable number.

1355493 is a deficient number, since it is larger than the sum of its proper divisors (451835).

1355493 is an equidigital number, since it uses as much as digits as its factorization.

1355493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451834.

The product of its digits is 8100, while the sum is 30.

The square root of 1355493 is about 1164.2564150564. The cubic root of 1355493 is about 110.6706412582.

The spelling of 1355493 in words is "one million, three hundred fifty-five thousand, four hundred ninety-three".