5406156491 has 2 divisors, whose sum is σ = 5406156492. Its totient is φ = 5406156490.

The previous prime is 5406156443. The next prime is 5406156499. The reversal of 5406156491 is 1946516045.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5406156491 - 2²² = 5401962187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (5406156499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2703078245 + 2703078246.

It is an arithmetic number, because the mean of its divisors is an integer number (2703078246).

Almost surely, 2^5406156491 is an apocalyptic number.

5406156491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5406156491 is an equidigital number, since it uses as much as digits as its factorization.

5406156491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 5406156491 is about 73526.5699662374. The cubic root of 5406156491 is about 1755.0771189289.

The spelling of 5406156491 in words is "five billion, four hundred six million, one hundred fifty-six thousand, four hundred ninety-one".