5151563491 has 2 divisors, whose sum is σ = 5151563492. Its totient is φ = 5151563490.

The previous prime is 5151563467. The next prime is 5151563503. The reversal of 5151563491 is 1943651515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5151563491 - 2⁹ = 5151562979 is a prime.

It is not a weakly prime, because it can be changed into another prime (5151563411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2575781745 + 2575781746.

It is an arithmetic number, because the mean of its divisors is an integer number (2575781746).

Almost surely, 2^5151563491 is an apocalyptic number.

5151563491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5151563491 is an equidigital number, since it uses as much as digits as its factorization.

5151563491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81000, while the sum is 40.

The square root of 5151563491 is about 71774.3930033546. The cubic root of 5151563491 is about 1727.0822426153.

The spelling of 5151563491 in words is "five billion, one hundred fifty-one million, five hundred sixty-three thousand, four hundred ninety-one".