555000050261 has 2 divisors, whose sum is σ = 555000050262. Its totient is φ = 555000050260.

The previous prime is 555000050251. The next prime is 555000050279. The reversal of 555000050261 is 162050000555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435210687025 + 119789363236 = 659705^2 + 346106^2 .

It is a cyclic number.

It is not a de Polignac number, because 555000050261 - 2¹⁰ = 555000049237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555000050251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277500025130 + 277500025131.

It is an arithmetic number, because the mean of its divisors is an integer number (277500025131).

Almost surely, 2^555000050261 is an apocalyptic number.

It is an amenable number.

555000050261 is a deficient number, since it is larger than the sum of its proper divisors (1).

555000050261 is an equidigital number, since it uses as much as digits as its factorization.

555000050261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 555000050261 in words is "five hundred fifty-five billion, fifty thousand, two hundred sixty-one".