1523113 has 4 divisors (see below), whose sum is σ = 1525588. Its totient is φ = 1520640.

The previous prime is 1523107. The next prime is 1523117. The reversal of 1523113 is 3113251.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3113251 = 761 ⋅4091.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 205209 = 1148^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1523113 - 2⁹ = 1522601 is a prime.

It is a Duffinian number.

1523113 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1523117) 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, 493 + ... + 1813.

It is an arithmetic number, because the mean of its divisors is an integer number (381397).

2^1523113 is an apocalyptic number.

It is an amenable number.

1523113 is a deficient number, since it is larger than the sum of its proper divisors (2475).

1523113 is a wasteful number, since it uses less digits than its factorization.

1523113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474.

The product of its digits is 90, while the sum is 16.

The square root of 1523113 is about 1234.1446430626. The cubic root of 1523113 is about 115.0563806715.

Adding to 1523113 its reverse (3113251), we get a palindrome (4636364).

The spelling of 1523113 in words is "one million, five hundred twenty-three thousand, one hundred thirteen".