5157220226491 has 2 divisors, whose sum is σ = 5157220226492. Its totient is φ = 5157220226490.

The previous prime is 5157220226461. The next prime is 5157220226507. The reversal of 5157220226491 is 1946220227515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5157220226491 - 2⁹ = 5157220225979 is a prime.

It is not a weakly prime, because it can be changed into another prime (5157220226461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578610113245 + 2578610113246.

It is an arithmetic number, because the mean of its divisors is an integer number (2578610113246).

Almost surely, 2^{5157220226491} is an apocalyptic number.

5157220226491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5157220226491 is an equidigital number, since it uses as much as digits as its factorization.

5157220226491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 5157220226491 in words is "five trillion, one hundred fifty-seven billion, two hundred twenty million, two hundred twenty-six thousand, four hundred ninety-one".