1722417541 has 4 divisors (see below), whose sum is σ = 1854911212. Its totient is φ = 1589923872.

The previous prime is 1722417517. The next prime is 1722417559. The reversal of 1722417541 is 1457142271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 874384900 + 848032641 = 29570^2 + 29121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1722417541 - 2⁹ = 1722417029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1722417497 and 1722417506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722417511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66246816 + ... + 66246841.

It is an arithmetic number, because the mean of its divisors is an integer number (463727803).

Almost surely, 2^1722417541 is an apocalyptic number.

It is an amenable number.

1722417541 is a deficient number, since it is larger than the sum of its proper divisors (132493671).

1722417541 is a wasteful number, since it uses less digits than its factorization.

1722417541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132493670.

The product of its digits is 15680, while the sum is 34.

The square root of 1722417541 is about 41502.0185171758. The cubic root of 1722417541 is about 1198.7063700561.

The spelling of 1722417541 in words is "one billion, seven hundred twenty-two million, four hundred seventeen thousand, five hundred forty-one".