51069541 has 2 divisors, whose sum is σ = 51069542. Its totient is φ = 51069540.

The previous prime is 51069533. The next prime is 51069553. The reversal of 51069541 is 14596015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51065316 + 4225 = 7146^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 51069541 - 2³ = 51069533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51066541) 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, 25534770 + 25534771.

It is an arithmetic number, because the mean of its divisors is an integer number (25534771).

Almost surely, 2^51069541 is an apocalyptic number.

It is an amenable number.

51069541 is a deficient number, since it is larger than the sum of its proper divisors (1).

51069541 is an equidigital number, since it uses as much as digits as its factorization.

51069541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 51069541 is about 7146.2956138128. The cubic root of 51069541 is about 371.0114545665.

The spelling of 51069541 in words is "fifty-one million, sixty-nine thousand, five hundred forty-one".