1722049 has 16 divisors (see below), whose sum is σ = 2160000. Its totient is φ = 1338624.

The previous prime is 1722037. The next prime is 1722053. The reversal of 1722049 is 9402271.

It is not a de Polignac number, because 1722049 - 2⁷ = 1721921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1722029) 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, 3202 + ... + 3700.

It is an arithmetic number, because the mean of its divisors is an integer number (135000).

2^1722049 is an apocalyptic number.

It is an amenable number.

1722049 is a deficient number, since it is larger than the sum of its proper divisors (437951).

1722049 is a wasteful number, since it uses less digits than its factorization.

1722049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1722049 is about 1312.2686462764. The cubic root of 1722049 is about 119.8620869310.

The spelling of 1722049 in words is "one million, seven hundred twenty-two thousand, forty-nine".