1724522 has 4 divisors (see below), whose sum is σ = 2586786. Its totient is φ = 862260.

The previous prime is 1724509. The next prime is 1724537. The reversal of 1724522 is 2254271.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2254271 = 197 ⋅11443.

It can be written as a sum of positive squares in only one way, i.e., 1661521 + 63001 = 1289^2 + 251^2 .

It is a super-2 number, since 2×1724522² = 5947952256968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431129 + ... + 431132.

2^1724522 is an apocalyptic number.

1724522 is a deficient number, since it is larger than the sum of its proper divisors (862264).

1724522 is an equidigital number, since it uses as much as digits as its factorization.

1724522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862263.

The product of its digits is 1120, while the sum is 23.

The square root of 1724522 is about 1313.2105695584. The cubic root of 1724522 is about 119.9194366658.

Adding to 1724522 its reverse (2254271), we get a palindrome (3978793).

The spelling of 1724522 in words is "one million, seven hundred twenty-four thousand, five hundred twenty-two".