51546413 has 2 divisors, whose sum is σ = 51546414. Its totient is φ = 51546412.

The previous prime is 51546409. The next prime is 51546437. The reversal of 51546413 is 31464515.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44049769 + 7496644 = 6637^2 + 2738^2 .

It is a cyclic number.

It is not a de Polignac number, because 51546413 - 2² = 51546409 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51546463) 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, 25773206 + 25773207.

It is an arithmetic number, because the mean of its divisors is an integer number (25773207).

Almost surely, 2^51546413 is an apocalyptic number.

It is an amenable number.

51546413 is a deficient number, since it is larger than the sum of its proper divisors (1).

51546413 is an equidigital number, since it uses as much as digits as its factorization.

51546413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 29.

The square root of 51546413 is about 7179.5830658890. The cubic root of 51546413 is about 372.1626764710.

The spelling of 51546413 in words is "fifty-one million, five hundred forty-six thousand, four hundred thirteen".