1522723 has 4 divisors (see below), whose sum is σ = 1526688. Its totient is φ = 1518760.

The previous prime is 1522711. The next prime is 1522727. The reversal of 1522723 is 3272251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3272251 = 41 ⋅79811.

It is a cyclic number.

It is not a de Polignac number, because 1522723 - 2⁵ = 1522691 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1522694 and 1522703.

It is not an unprimeable number, because it can be changed into a prime (1522727) 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, 1336 + ... + 2197.

It is an arithmetic number, because the mean of its divisors is an integer number (381672).

2^1522723 is an apocalyptic number.

1522723 is a deficient number, since it is larger than the sum of its proper divisors (3965).

1522723 is an equidigital number, since it uses as much as digits as its factorization.

1522723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964.

The product of its digits is 840, while the sum is 22.

The square root of 1522723 is about 1233.9866287768. The cubic root of 1522723 is about 115.0465595970.

Adding to 1522723 its reverse (3272251), we get a palindrome (4794974).

The spelling of 1522723 in words is "one million, five hundred twenty-two thousand, seven hundred twenty-three".