1722513 has 16 divisors (see below), whose sum is σ = 2560320. Its totient is φ = 1022784.

The previous prime is 1722481. The next prime is 1722529. The reversal of 1722513 is 3152271.

It is not a de Polignac number, because 1722513 - 2⁵ = 1722481 is a prime.

It is a Curzon number.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 1722513.

It is not an unprimeable number, because it can be changed into a prime (1722563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370 + ... + 1892.

It is an arithmetic number, because the mean of its divisors is an integer number (160020).

2^1722513 is an apocalyptic number.

1722513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1722513 is a deficient number, since it is larger than the sum of its proper divisors (837807).

1722513 is a wasteful number, since it uses less digits than its factorization.

1722513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568.

The product of its digits is 420, while the sum is 21.

The square root of 1722513 is about 1312.4454274369. The cubic root of 1722513 is about 119.8728514357.

Adding to 1722513 its reverse (3152271), we get a palindrome (4874784).

The spelling of 1722513 in words is "one million, seven hundred twenty-two thousand, five hundred thirteen".