1513223 has 4 divisors (see below), whose sum is σ = 1534608. Its totient is φ = 1491840.

The previous prime is 1513219. The next prime is 1513229. The reversal of 1513223 is 3223151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1513223 - 2² = 1513219 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 (1513229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10586 + ... + 10727.

It is an arithmetic number, because the mean of its divisors is an integer number (383652).

2^1513223 is an apocalyptic number.

1513223 is a deficient number, since it is larger than the sum of its proper divisors (21385).

1513223 is an equidigital number, since it uses as much as digits as its factorization.

1513223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21384.

The product of its digits is 180, while the sum is 17.

The square root of 1513223 is about 1230.1312938057. The cubic root of 1513223 is about 114.8068085899.

Adding to 1513223 its reverse (3223151), we get a palindrome (4736374).

The spelling of 1513223 in words is "one million, five hundred thirteen thousand, two hundred twenty-three".