1720652253 has 4 divisors (see below), whose sum is σ = 2294203008. Its totient is φ = 1147101500.

The previous prime is 1720652249. The next prime is 1720652279. The reversal of 1720652253 is 3522560271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1720652253 - 2² = 1720652249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720652953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286775373 + ... + 286775378.

It is an arithmetic number, because the mean of its divisors is an integer number (573550752).

Almost surely, 2^1720652253 is an apocalyptic number.

It is an amenable number.

1720652253 is a deficient number, since it is larger than the sum of its proper divisors (573550755).

1720652253 is an equidigital number, since it uses as much as digits as its factorization.

1720652253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573550754.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 1720652253 is about 41480.7455694808. The cubic root of 1720652253 is about 1198.2967161362.

The spelling of 1720652253 in words is "one billion, seven hundred twenty million, six hundred fifty-two thousand, two hundred fifty-three".