2631550091 has 2 divisors, whose sum is σ = 2631550092. Its totient is φ = 2631550090.

The previous prime is 2631550087. The next prime is 2631550093. The reversal of 2631550091 is 1900551362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2631550091 - 2² = 2631550087 is a prime.

Together with 2631550093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2631550093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315775045 + 1315775046.

It is an arithmetic number, because the mean of its divisors is an integer number (1315775046).

Almost surely, 2^2631550091 is an apocalyptic number.

2631550091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631550091 is an equidigital number, since it uses as much as digits as its factorization.

2631550091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 2631550091 is about 51298.6363463981. The cubic root of 2631550091 is about 1380.6085132292.

The spelling of 2631550091 in words is "two billion, six hundred thirty-one million, five hundred fifty thousand, ninety-one".