505560061 has 2 divisors, whose sum is σ = 505560062. Its totient is φ = 505560060.

The previous prime is 505560049. The next prime is 505560067. The reversal of 505560061 is 160065505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501536025 + 4024036 = 22395^2 + 2006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505560061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505560067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252780030 + 252780031.

It is an arithmetic number, because the mean of its divisors is an integer number (252780031).

Almost surely, 2^505560061 is an apocalyptic number.

It is an amenable number.

505560061 is a deficient number, since it is larger than the sum of its proper divisors (1).

505560061 is an equidigital number, since it uses as much as digits as its factorization.

505560061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 505560061 is about 22484.6627948920. The cubic root of 505560061 is about 796.6317032288.

The spelling of 505560061 in words is "five hundred five million, five hundred sixty thousand, sixty-one".