51454591 has 2 divisors, whose sum is σ = 51454592. Its totient is φ = 51454590.

The previous prime is 51454583. The next prime is 51454619. The reversal of 51454591 is 19545415.

It is a happy number.

51454591 is digitally balanced in base 2, 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 51454591 - 2³ = 51454583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51454541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25727295 + 25727296.

It is an arithmetic number, because the mean of its divisors is an integer number (25727296).

Almost surely, 2^51454591 is an apocalyptic number.

51454591 is a deficient number, since it is larger than the sum of its proper divisors (1).

51454591 is an equidigital number, since it uses as much as digits as its factorization.

51454591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 34.

The square root of 51454591 is about 7173.1855545497. The cubic root of 51454591 is about 371.9415616184.

The spelling of 51454591 in words is "fifty-one million, four hundred fifty-four thousand, five hundred ninety-one".