1356173 has 12 divisors (see below), whose sum is σ = 1699740. Its totient is φ = 1072512.

The previous prime is 1356169. The next prime is 1356181. The reversal of 1356173 is 3716531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 268324 + 1087849 = 518^2 + 1043^2 .

It is not a de Polignac number, because 1356173 - 2² = 1356169 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428 + ... + 1701.

It is an arithmetic number, because the mean of its divisors is an integer number (141645).

2^1356173 is an apocalyptic number.

1356173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1356173 is a deficient number, since it is larger than the sum of its proper divisors (343567).

1356173 is a wasteful number, since it uses less digits than its factorization.

1356173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156 (or 2149 counting only the distinct ones).

The product of its digits is 1890, while the sum is 26.

The square root of 1356173 is about 1164.5484103291. The cubic root of 1356173 is about 110.6891446011.

The spelling of 1356173 in words is "one million, three hundred fifty-six thousand, one hundred seventy-three".