9555652561 has 32 divisors (see below), whose sum is σ = 11910705408. Its totient is φ = 7464683520.

The previous prime is 9555652559. The next prime is 9555652591. The reversal of 9555652561 is 1652565559.

It is not a de Polignac number, because 9555652561 - 2¹ = 9555652559 is a prime.

It is a super-3 number, since 3×9555652561³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9555652531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2887870 + ... + 2891176.

It is an arithmetic number, because the mean of its divisors is an integer number (372209544).

Almost surely, 2^9555652561 is an apocalyptic number.

9555652561 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

9555652561 is a deficient number, since it is larger than the sum of its proper divisors (2355052847).

9555652561 is a wasteful number, since it uses less digits than its factorization.

9555652561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721.

The product of its digits is 2025000, while the sum is 49.

The square root of 9555652561 is about 97753.0181682387. The cubic root of 9555652561 is about 2122.0394342160.

The spelling of 9555652561 in words is "nine billion, five hundred fifty-five million, six hundred fifty-two thousand, five hundred sixty-one".