51465541 has 2 divisors, whose sum is σ = 51465542. Its totient is φ = 51465540.

The previous prime is 51465529. The next prime is 51465551. The reversal of 51465541 is 14556415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50708641 + 756900 = 7121^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 51465541 - 2⁷ = 51465413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51465521) 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, 25732770 + 25732771.

It is an arithmetic number, because the mean of its divisors is an integer number (25732771).

Almost surely, 2^51465541 is an apocalyptic number.

It is an amenable number.

51465541 is a deficient number, since it is larger than the sum of its proper divisors (1).

51465541 is an equidigital number, since it uses as much as digits as its factorization.

51465541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The square root of 51465541 is about 7173.9487731653. The cubic root of 51465541 is about 371.9679439175.

The spelling of 51465541 in words is "fifty-one million, four hundred sixty-five thousand, five hundred forty-one".