1722153133 has 2 divisors, whose sum is σ = 1722153134. Its totient is φ = 1722153132.

The previous prime is 1722153127. The next prime is 1722153143. The reversal of 1722153133 is 3313512271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366189444 + 355963689 = 36962^2 + 18867^2 .

It is an emirp because it is prime and its reverse (3313512271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1722153133 is a prime.

It is a super-2 number, since 2×1722153133² = 5931622827003431378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1722153113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861076566 + 861076567.

It is an arithmetic number, because the mean of its divisors is an integer number (861076567).

It is a self-describing number.

Almost surely, 2^1722153133 is an apocalyptic number.

It is an amenable number.

1722153133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1722153133 is an equidigital number, since it uses as much as digits as its factorization.

1722153133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 1722153133 is about 41498.8329113000. The cubic root of 1722153133 is about 1198.6450291857.

The spelling of 1722153133 in words is "one billion, seven hundred twenty-two million, one hundred fifty-three thousand, one hundred thirty-three".