561051100051 has 4 divisors (see below), whose sum is σ = 604208876992. Its totient is φ = 517893323112.

The previous prime is 561051100003. The next prime is 561051100133. The reversal of 561051100051 is 150001150165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561051100051 - 2⁷ = 561051099923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561051099989 and 561051100025.

It is not an unprimeable number, because it can be changed into a prime (561051100151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21578888451 + ... + 21578888476.

It is an arithmetic number, because the mean of its divisors is an integer number (151052219248).

Almost surely, 2^561051100051 is an apocalyptic number.

561051100051 is a deficient number, since it is larger than the sum of its proper divisors (43157776941).

561051100051 is a wasteful number, since it uses less digits than its factorization.

561051100051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43157776940.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 561051100051 in words is "five hundred sixty-one billion, fifty-one million, one hundred thousand, fifty-one".