1520223 has 8 divisors (see below), whose sum is σ = 2046000. Its totient is φ = 1003968.

The previous prime is 1520221. The next prime is 1520227. The reversal of 1520223 is 3220251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1520223 - 2¹ = 1520221 is a prime.

It is a super-2 number, since 2×1520223² = 4622155939458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520221) 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 7 ways as a sum of consecutive naturals, for example, 1998 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (255750).

2^1520223 is an apocalyptic number.

1520223 is a deficient number, since it is larger than the sum of its proper divisors (525777).

1520223 is a wasteful number, since it uses less digits than its factorization.

1520223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1520223 is about 1232.9732357193. The cubic root of 1520223 is about 114.9835641287.

Adding to 1520223 its reverse (3220251), we get a palindrome (4740474).

It can be divided in two parts, 15202 and 23, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 1520223 in words is "one million, five hundred twenty thousand, two hundred twenty-three".