561051005055 has 32 divisors (see below), whose sum is σ = 923424122880. Its totient is φ = 290707441920.

The previous prime is 561051005051. The next prime is 561051005087. The reversal of 561051005055 is 550500150165.

It is not a de Polignac number, because 561051005055 - 2² = 561051005051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561051005051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1761547 + ... + 2055516.

It is an arithmetic number, because the mean of its divisors is an integer number (28857003840).

Almost surely, 2^561051005055 is an apocalyptic number.

561051005055 is a deficient number, since it is larger than the sum of its proper divisors (362373117825).

561051005055 is a wasteful number, since it uses less digits than its factorization.

561051005055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817351.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 561051005055 in words is "five hundred sixty-one billion, fifty-one million, five thousand, fifty-five".