1349521 has 4 divisors (see below), whose sum is σ = 1352932. Its totient is φ = 1346112.

The previous prime is 1349473. The next prime is 1349531. The reversal of 1349521 is 1259431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1259431 = 563 ⋅2237.

It can be written as a sum of positive squares in 2 ways, for example, as 1134225 + 215296 = 1065^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349521 - 2⁷ = 1349393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349531) 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, 1020 + ... + 1933.

It is an arithmetic number, because the mean of its divisors is an integer number (338233).

2^1349521 is an apocalyptic number.

It is an amenable number.

1349521 is a deficient number, since it is larger than the sum of its proper divisors (3411).

1349521 is an equidigital number, since it uses as much as digits as its factorization.

1349521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3410.

The product of its digits is 1080, while the sum is 25.

The square root of 1349521 is about 1161.6888567943. The cubic root of 1349521 is about 110.5078719234.

The spelling of 1349521 in words is "one million, three hundred forty-nine thousand, five hundred twenty-one".