1521053 has 4 divisors (see below), whose sum is σ = 1526748. Its totient is φ = 1515360.

The previous prime is 1521049. The next prime is 1521067. The reversal of 1521053 is 3501251.

1521053 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3501251 = 13 ⋅269327.

It can be written as a sum of positive squares in 2 ways, for example, as 669124 + 851929 = 818^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 1521053 - 2² = 1521049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2426 + ... + 2987.

It is an arithmetic number, because the mean of its divisors is an integer number (381687).

2^1521053 is an apocalyptic number.

It is an amenable number.

1521053 is a deficient number, since it is larger than the sum of its proper divisors (5695).

1521053 is an equidigital number, since it uses as much as digits as its factorization.

1521053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1521053 is about 1233.3097745498. The cubic root of 1521053 is about 115.0044862774.

The spelling of 1521053 in words is "one million, five hundred twenty-one thousand, fifty-three".