51454643 has 2 divisors, whose sum is σ = 51454644. Its totient is φ = 51454642.

The previous prime is 51454633. The next prime is 51454651. The reversal of 51454643 is 34645415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51454643 - 2⁸ = 51454387 is a prime.

It is not a weakly prime, because it can be changed into another prime (51454633) 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, 25727321 + 25727322.

It is an arithmetic number, because the mean of its divisors is an integer number (25727322).

Almost surely, 2^51454643 is an apocalyptic number.

51454643 is a deficient number, since it is larger than the sum of its proper divisors (1).

51454643 is an equidigital number, since it uses as much as digits as its factorization.

51454643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 32.

The square root of 51454643 is about 7173.1891791587. The cubic root of 51454643 is about 371.9416869131.

The spelling of 51454643 in words is "fifty-one million, four hundred fifty-four thousand, six hundred forty-three".