5151491 has 2 divisors, whose sum is σ = 5151492. Its totient is φ = 5151490.

The previous prime is 5151481. The next prime is 5151521. The reversal of 5151491 is 1941515.

5151491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5151491 - 2¹⁸ = 4889347 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5151491.

It is not a weakly prime, because it can be changed into another prime (5151431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2575745 + 2575746.

It is an arithmetic number, because the mean of its divisors is an integer number (2575746).

Almost surely, 2^5151491 is an apocalyptic number.

5151491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5151491 is an equidigital number, since it uses as much as digits as its factorization.

5151491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 26.

The square root of 5151491 is about 2269.6896263586. The cubic root of 5151491 is about 172.7074141612.

The spelling of 5151491 in words is "five million, one hundred fifty-one thousand, four hundred ninety-one".