5106561091 has 2 divisors, whose sum is σ = 5106561092. Its totient is φ = 5106561090.

The previous prime is 5106561067. The next prime is 5106561107. The reversal of 5106561091 is 1901656015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5106561091 - 2⁵ = 5106561059 is a prime.

It is a super-2 number, since 2×5106561091² = 52153932352230220562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5106561791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553280545 + 2553280546.

It is an arithmetic number, because the mean of its divisors is an integer number (2553280546).

Almost surely, 2^5106561091 is an apocalyptic number.

5106561091 is a deficient number, since it is larger than the sum of its proper divisors (1).

5106561091 is an equidigital number, since it uses as much as digits as its factorization.

5106561091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 5106561091 is about 71460.2063459097. The cubic root of 5106561091 is about 1722.0384488594.

The spelling of 5106561091 in words is "five billion, one hundred six million, five hundred sixty-one thousand, ninety-one".