2081717553 has 8 divisors (see below), whose sum is σ = 2791130400. Its totient is φ = 1380058208.

The previous prime is 2081717531. The next prime is 2081717581. The reversal of 2081717553 is 3557171802.

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

It is a cyclic number.

It is not a de Polignac number, because 2081717553 - 2⁶ = 2081717489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2081717503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1937748 + ... + 1938821.

It is an arithmetic number, because the mean of its divisors is an integer number (348891300).

Almost surely, 2^2081717553 is an apocalyptic number.

It is an amenable number.

2081717553 is a deficient number, since it is larger than the sum of its proper divisors (709412847).

2081717553 is a wasteful number, since it uses less digits than its factorization.

2081717553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876751.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 2081717553 is about 45625.8430387867. The cubic root of 2081717553 is about 1276.8521185358.

The spelling of 2081717553 in words is "two billion, eighty-one million, seven hundred seventeen thousand, five hundred fifty-three".