50055564997 has 2 divisors, whose sum is σ = 50055564998. Its totient is φ = 50055564996.

The previous prime is 50055564931. The next prime is 50055565061. The reversal of 50055564997 is 79946555005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27947146276 + 22108418721 = 167174^2 + 148689^2 .

It is a cyclic number.

It is not a de Polignac number, because 50055564997 - 2²⁷ = 49921347269 is a prime.

It is a super-2 number, since 2×50055564997² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50055564397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25027782498 + 25027782499.

It is an arithmetic number, because the mean of its divisors is an integer number (25027782499).

Almost surely, 2^50055564997 is an apocalyptic number.

It is an amenable number.

50055564997 is a deficient number, since it is larger than the sum of its proper divisors (1).

50055564997 is an equidigital number, since it uses as much as digits as its factorization.

50055564997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505000, while the sum is 55.

The spelling of 50055564997 in words is "fifty billion, fifty-five million, five hundred sixty-four thousand, nine hundred ninety-seven".