653255771 has 16 divisors (see below), whose sum is σ = 760064448. Its totient is φ = 549849600.

The previous prime is 653255749. The next prime is 653255791. The reversal of 653255771 is 177552356.

It is a cyclic number.

It is not a de Polignac number, because 653255771 - 2²⁶ = 586146907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653255731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440351 + ... + 441831.

It is an arithmetic number, because the mean of its divisors is an integer number (47504028).

Almost surely, 2^653255771 is an apocalyptic number.

653255771 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

653255771 is a deficient number, since it is larger than the sum of its proper divisors (106808677).

653255771 is a wasteful number, since it uses less digits than its factorization.

653255771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582.

The product of its digits is 220500, while the sum is 41.

The square root of 653255771 is about 25558.8687347465. The cubic root of 653255771 is about 867.6829927312.

The spelling of 653255771 in words is "six hundred fifty-three million, two hundred fifty-five thousand, seven hundred seventy-one".