50820551 has 2 divisors, whose sum is σ = 50820552. Its totient is φ = 50820550.

The previous prime is 50820541. The next prime is 50820559. The reversal of 50820551 is 15502805.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50820551 - 2¹⁴ = 50804167 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50820551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50820559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25410275 + 25410276.

It is an arithmetic number, because the mean of its divisors is an integer number (25410276).

Almost surely, 2^50820551 is an apocalyptic number.

50820551 is a deficient number, since it is larger than the sum of its proper divisors (1).

50820551 is an equidigital number, since it uses as much as digits as its factorization.

50820551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 50820551 is about 7128.8534141193. The cubic root of 50820551 is about 370.4075154514.

The spelling of 50820551 in words is "fifty million, eight hundred twenty thousand, five hundred fifty-one".