2553656443 has 32 divisors (see below), whose sum is σ = 2917684224. Its totient is φ = 2217359232.

The previous prime is 2553656429. The next prime is 2553656447. The reversal of 2553656443 is 3446563552.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2553656443 is a prime.

It is a super-2 number, since 2×2553656443² = 13042322457750824498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2553656443.

It is not an unprimeable number, because it can be changed into a prime (2553656447) 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 31 ways as a sum of consecutive naturals, for example, 8715405 + ... + 8715697.

It is an arithmetic number, because the mean of its divisors is an integer number (91177632).

Almost surely, 2^2553656443 is an apocalyptic number.

2553656443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2553656443 is a deficient number, since it is larger than the sum of its proper divisors (364027781).

2553656443 is a wasteful number, since it uses less digits than its factorization.

2553656443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715.

The product of its digits is 1296000, while the sum is 43.

The square root of 2553656443 is about 50533.7159033452. The cubic root of 2553656443 is about 1366.8498925537.

The spelling of 2553656443 in words is "two billion, five hundred fifty-three million, six hundred fifty-six thousand, four hundred forty-three".