1722045 has 16 divisors (see below), whose sum is σ = 2967552. Its totient is φ = 847680.

The previous prime is 1722037. The next prime is 1722053. The reversal of 1722045 is 5402271.

It is an interprime number because it is at equal distance from previous prime (1722037) and next prime (1722053).

It is not a de Polignac number, because 1722045 - 2³ = 1722037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4221 + ... + 4610.

It is an arithmetic number, because the mean of its divisors is an integer number (185472).

2^1722045 is an apocalyptic number.

1722045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1722045 is a deficient number, since it is larger than the sum of its proper divisors (1245507).

1722045 is a wasteful number, since it uses less digits than its factorization.

1722045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8852.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1722045 is about 1312.2671221973. The cubic root of 1722045 is about 119.8619941251.

The spelling of 1722045 in words is "one million, seven hundred twenty-two thousand, forty-five".