561055580051 has 2 divisors, whose sum is σ = 561055580052. Its totient is φ = 561055580050.

The previous prime is 561055580047. The next prime is 561055580053. The reversal of 561055580051 is 150085550165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561055580051 - 2² = 561055580047 is a prime.

Together with 561055580053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 561055579990 and 561055580008.

It is not a weakly prime, because it can be changed into another prime (561055580053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280527790025 + 280527790026.

It is an arithmetic number, because the mean of its divisors is an integer number (280527790026).

Almost surely, 2^561055580051 is an apocalyptic number.

561055580051 is a deficient number, since it is larger than the sum of its proper divisors (1).

561055580051 is an equidigital number, since it uses as much as digits as its factorization.

561055580051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150000, while the sum is 41.

The spelling of 561055580051 in words is "five hundred sixty-one billion, fifty-five million, five hundred eighty thousand, fifty-one".