561854263 has 12 divisors (see below), whose sum is σ = 597301320. Its totient is φ = 528406416.

The previous prime is 561854257. The next prime is 561854269. The reversal of 561854263 is 362458165.

It is an interprime number because it is at equal distance from previous prime (561854257) and next prime (561854269).

It is not a de Polignac number, because 561854263 - 2⁵ = 561854231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561854269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44581 + ... + 55777.

It is an arithmetic number, because the mean of its divisors is an integer number (49775110).

Almost surely, 2^561854263 is an apocalyptic number.

561854263 is a deficient number, since it is larger than the sum of its proper divisors (35447057).

561854263 is a wasteful number, since it uses less digits than its factorization.

561854263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11374 (or 11355 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 561854263 is about 23703.4652108083. The cubic root of 561854263 is about 825.1658132587.

The spelling of 561854263 in words is "five hundred sixty-one million, eight hundred fifty-four thousand, two hundred sixty-three".