561553006031 has 2 divisors, whose sum is σ = 561553006032. Its totient is φ = 561553006030.

The previous prime is 561553006013. The next prime is 561553006033. The reversal of 561553006031 is 130600355165.

It is a happy number.

Together with previous prime (561553006013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561553006031 - 2²² = 561548811727 is a prime.

It is a super-2 number, since 2×561553006031² (a number of 24 digits) contains 22 as substring.

Together with 561553006033, 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 = 561553005982 and 561553006000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561553006033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280776503015 + 280776503016.

It is an arithmetic number, because the mean of its divisors is an integer number (280776503016).

Almost surely, 2^561553006031 is an apocalyptic number.

561553006031 is a deficient number, since it is larger than the sum of its proper divisors (1).

561553006031 is an equidigital number, since it uses as much as digits as its factorization.

561553006031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 35.

The spelling of 561553006031 in words is "five hundred sixty-one billion, five hundred fifty-three million, six thousand, thirty-one".