561110051 has 4 divisors (see below), whose sum is σ = 574795704. Its totient is φ = 547424400.

The previous prime is 561110027. The next prime is 561110083. The reversal of 561110051 is 150011165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150011165 = 5 ⋅30002233.

It is a cyclic number.

It is not a de Polignac number, because 561110051 - 2²⁶ = 494001187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561110951) 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, 6842765 + ... + 6842846.

It is an arithmetic number, because the mean of its divisors is an integer number (143698926).

Almost surely, 2^561110051 is an apocalyptic number.

561110051 is a deficient number, since it is larger than the sum of its proper divisors (13685653).

561110051 is a wasteful number, since it uses less digits than its factorization.

561110051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13685652.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 561110051 is about 23687.7616291620. The cubic root of 561110051 is about 824.8013239372.

The spelling of 561110051 in words is "five hundred sixty-one million, one hundred ten thousand, fifty-one".