1722545 has 8 divisors (see below), whose sum is σ = 2255040. Its totient is φ = 1252720.

The previous prime is 1722529. The next prime is 1722551. The reversal of 1722545 is 5452271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1722545 - 2⁴ = 1722529 is a prime.

It is a super-3 number, since 3×1722545³ = 15333206465799085875, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15605 + ... + 15714.

It is an arithmetic number, because the mean of its divisors is an integer number (281880).

2^1722545 is an apocalyptic number.

It is an amenable number.

1722545 is a deficient number, since it is larger than the sum of its proper divisors (532495).

1722545 is a wasteful number, since it uses less digits than its factorization.

1722545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31335.

The product of its digits is 2800, while the sum is 26.

The square root of 1722545 is about 1312.4576183634. The cubic root of 1722545 is about 119.8735937441.

The spelling of 1722545 in words is "one million, seven hundred twenty-two thousand, five hundred forty-five".