1520006223 has 4 divisors (see below), whose sum is σ = 2026674968. Its totient is φ = 1013337480.

The previous prime is 1520006177. The next prime is 1520006237. The reversal of 1520006223 is 3226000251.

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

It is not a de Polignac number, because 1520006223 - 2¹³ = 1519998031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1520006223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520006623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253334368 + ... + 253334373.

It is an arithmetic number, because the mean of its divisors is an integer number (506668742).

Almost surely, 2^1520006223 is an apocalyptic number.

1520006223 is a deficient number, since it is larger than the sum of its proper divisors (506668745).

1520006223 is an equidigital number, since it uses as much as digits as its factorization.

1520006223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506668744.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1520006223 is about 38987.2571874452. The cubic root of 1520006223 is about 1149.7809848827.

Adding to 1520006223 its reverse (3226000251), we get a palindrome (4746006474).

The spelling of 1520006223 in words is "one billion, five hundred twenty million, six thousand, two hundred twenty-three".