5105123087 has 2 divisors, whose sum is σ = 5105123088. Its totient is φ = 5105123086.

The previous prime is 5105123071. The next prime is 5105123131. The reversal of 5105123087 is 7803215015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5105123087 - 2⁴ = 5105123071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5105123687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552561543 + 2552561544.

It is an arithmetic number, because the mean of its divisors is an integer number (2552561544).

Almost surely, 2^5105123087 is an apocalyptic number.

5105123087 is a deficient number, since it is larger than the sum of its proper divisors (1).

5105123087 is an equidigital number, since it uses as much as digits as its factorization.

5105123087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 5105123087 is about 71450.1440656350. The cubic root of 5105123087 is about 1721.8767920803.

The spelling of 5105123087 in words is "five billion, one hundred five million, one hundred twenty-three thousand, eighty-seven".