6855552631 has 2 divisors, whose sum is σ = 6855552632. Its totient is φ = 6855552630.

The previous prime is 6855552611. The next prime is 6855552677. The reversal of 6855552631 is 1362555586.

6855552631 = T₆₇₆₀₃ + T₆₇₆₀₄ + T₆₇₆₀₅.

It is an a-pointer prime, because the next prime (6855552677) can be obtained adding 6855552631 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6855552631 is a prime.

It is a super-2 number, since 2×6855552631² = 93997203752822044322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6855552611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3427776315 + 3427776316.

It is an arithmetic number, because the mean of its divisors is an integer number (3427776316).

Almost surely, 2^6855552631 is an apocalyptic number.

6855552631 is the 67605-th centered triangular number.

6855552631 is a deficient number, since it is larger than the sum of its proper divisors (1).

6855552631 is an equidigital number, since it uses as much as digits as its factorization.

6855552631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080000, while the sum is 46.

The square root of 6855552631 is about 82798.2646617669. The cubic root of 6855552631 is about 1899.6816300354.

The spelling of 6855552631 in words is "six billion, eight hundred fifty-five million, five hundred fifty-two thousand, six hundred thirty-one".