1522263 has 4 divisors (see below), whose sum is σ = 2029688. Its totient is φ = 1014840.

The previous prime is 1522253. The next prime is 1522321. The reversal of 1522263 is 3622251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3622251 = 3 ⋅1207417.

It is a de Polignac number, because none of the positive numbers 2^k-1522263 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1522253) 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, 253708 + ... + 253713.

It is an arithmetic number, because the mean of its divisors is an integer number (507422).

2^1522263 is an apocalyptic number.

1522263 is a deficient number, since it is larger than the sum of its proper divisors (507425).

1522263 is an equidigital number, since it uses as much as digits as its factorization.

1522263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507424.

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

The square root of 1522263 is about 1233.8002269411. The cubic root of 1522263 is about 115.0349736098.

It can be divided in two parts, 152 and 2263, that added together give a triangular number (2415 = T₆₉).

The spelling of 1522263 in words is "one million, five hundred twenty-two thousand, two hundred sixty-three".