1520213 has 2 divisors, whose sum is σ = 1520214. Its totient is φ = 1520212.

The previous prime is 1520203. The next prime is 1520221. The reversal of 1520213 is 3120251.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1214404 + 305809 = 1102^2 + 553^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520213 - 2¹⁴ = 1503829 is a prime.

It is a super-2 number, since 2×1520213² = 4622095130738, which contains 22 as substring.

It is equal to p₁₁₅₆₀₁ and since 1520213 and 115601 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520203) 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 as a sum of consecutive naturals, namely, 760106 + 760107.

It is an arithmetic number, because the mean of its divisors is an integer number (760107).

2^1520213 is an apocalyptic number.

It is an amenable number.

1520213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520213 is an equidigital number, since it uses as much as digits as its factorization.

1520213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1520213 is about 1232.9691804745. The cubic root of 1520213 is about 114.9833120082.

Adding to 1520213 its reverse (3120251), we get a palindrome (4640464).

The spelling of 1520213 in words is "one million, five hundred twenty thousand, two hundred thirteen".